Dry and windy conditions will produce dangerous fire weather conditions across the southern High Plains into the Southwest. Severe storms, including very large hail, strong tornadoes, and winds, are expected from the Great Lakes into the central/southern Plains. Heavy late-season snow and cold temperatures are expected in the northern to central Rockies. Heat is spreading across the eastern U.S.. Read More >
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393
FNUS54 KMRX 200640
FWFMRX
Fire Weather Planning Forecast for East Tennessee...Southwest
Virginia...and Extreme Southwest North Carolina
National Weather Service Morristown TN
240 AM EDT Wed May 20 2026
.DISCUSSION...
A wet and unsettled weather pattern will develop on Wednesday and
continue through the weekend. Occasional showers and afternoon
thunderstorms are anticipated each day, especially during the
afternoon and early evening hours. Lightning, small hail, and
gusty winds can be expected during any thunderstorm. Rainfall
amounts will be wide ranging, depending on "winners and losers" in
the daily random storm chances. Mountains will serve as a focus
for storm development.
VAZ001-210745-
Lee-
Including the city of Rose Hill
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 84-89 (-1) 60-65 (-2) 76-81
RH % (24h trend) 47-52 (+10) 95-100 (+14) 68-73
RH Recovery Excellent
AM 20FT Wnd (mph) SW 5 Lgt/Var
PM 20FT Wnd (mph) W 6 N 7 Lgt/Var
Transport Wnd (mph) SW 12 NE 5 NW 5
Mixing Hgt(ft-agl) 6210 420 2810
Vent Rate (mph-ft) 74520 2100 14050
Max Dispersion Early 58 Gen Good 5 Very Poor 11 Poor
Max Dispersion Late 60 Gen Good 2 Very Poor 12 Poor
Category Day 4 1 1
Max LVORI Early 5 7 10
Max LVORI Late 3 9 4
Precip Chance (%) 50 50 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.07 0.03 0.21
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 40 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 74 percent. Southeast winds less than
10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. Southeast winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 76 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 69 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 71 percent. Southwest winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 70 percent. Southwest winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
VAZ002-210745-
Wise-
Including the cities of Big Stone Gap, Norton, Wise, Coeburn,
Appalachia, and Pardee
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 81-86 (-3) 59-64 (-3) 71-76
RH % (24h trend) 47-52 (+9) 95-100 (+19) 73-78
RH Recovery Excellent
AM 20FT Wnd (mph) SW 7 Lgt/Var
PM 20FT Wnd (mph) W 6 N 7 NE 5
Transport Wnd (mph) SW 12 NE 5 NE 7
Mixing Hgt(ft-agl) 6380 410 1690
Vent Rate (mph-ft) 76560 2050 11830
Max Dispersion Early 59 Gen Good 7 Poor 9 Poor
Max Dispersion Late 66 Good 2 Very Poor 12 Poor
Category Day 4 1 1
Max LVORI Early 4 7 9
Max LVORI Late 3 9 4
Precip Chance (%) 50 70 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 2 3
Precip Amount 0.05 0.07 0.22
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 40 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely. Lows around
60. East winds less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the mid
70s. Minimum RH 74 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. South winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
mid 70s. Minimum RH 76 percent. South winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 68 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. South
winds less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 72 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. South
winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 70 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
VAZ005-210745-
Scott VA-
Including the city of Hiltons
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 84-89 (-3) 62-67 (-1) 77-82
RH % (24h trend) 44-49 (+6) 95-100 (+15) 69-74
RH Recovery Excellent
AM 20FT Wnd (mph) SW 6 Lgt/Var
PM 20FT Wnd (mph) W 6 N 7 NE 5
Transport Wnd (mph) SW 10 NE 6 N 6
Mixing Hgt(ft-agl) 6550 400 2940
Vent Rate (mph-ft) 65500 2400 17640
Max Dispersion Early 55 Gen Good 4 Very Poor 14 Gen Poor
Max Dispersion Late 60 Gen Good 2 Very Poor 16 Gen Poor
Category Day 4 1 2
Max LVORI Early 5 7 8
Max LVORI Late 2 9 4
Precip Chance (%) 30 60 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 2 3
Precip Amount 0.01 0.07 0.19
Precip Begin 5 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 30 40 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 74 percent. Southeast winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. Southeast winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 77 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 72 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. Southwest winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
VAZ006-210745-
Russell-
Including the cities of Hansonville, Lebanon, Dye, Castlewood,
Honaker, and Rosedale
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Mclear Mcldy Mcldy
Temp (24h trend) 82-87 (-3) 61-66 (-2) 73-78
RH % (24h trend) 41-46 (+6) 95-100 (+21) 71-76
RH Recovery Excellent
AM 20FT Wnd (mph) SW 7 Lgt/Var
PM 20FT Wnd (mph) W 7 N 7 Lgt/Var
Transport Wnd (mph) SW 12 NE 5 N 7
Mixing Hgt(ft-agl) 6820 420 2090
Vent Rate (mph-ft) 81840 2100 14630
Max Dispersion Early 60 Gen Good 9 Poor 11 Poor
Max Dispersion Late 71 Good 2 Very Poor 14 Gen Poor
Category Day 4 1 1
Max LVORI Early 4 7 8
Max LVORI Late 2 8 4
Precip Chance (%) 30 70 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.01 0.12 0.21
Precip Begin 5 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 30 40 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds 5 to 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the mid
70s. Minimum RH 72 percent. Southeast winds 5 to 10 mph.
.FRIDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Southeast winds
5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
mid 70s. Minimum RH 77 percent. South winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 68 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. South
winds less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 73 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. South
winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 70 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
VAZ008-210745-
Washington VA-
Including the cities of Benhams, Bristol VA, and Abingdon
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Mclear Mcldy Mcldy
Temp (24h trend) 83-88 (-1) 59-64 (-2) 76-81
RH % (24h trend) 40-45 (+2) 95-100 (+22) 67-72
RH Recovery Excellent
AM 20FT Wnd (mph) SW 8 Lgt/Var
PM 20FT Wnd (mph) W 7 N 8 NE 5
Transport Wnd (mph) SW 12 NE 5 W 6
Mixing Hgt(ft-agl) 6490 380 2700
Vent Rate (mph-ft) 77880 1900 16200
Max Dispersion Early 57 Gen Good 4 Very Poor 12 Poor
Max Dispersion Late 63 Good 2 Very Poor 15 Gen Poor
Category Day 4 1 2
Max LVORI Early 4 6 9
Max LVORI Late 2 9 4
Precip Chance (%) 30 70 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.02 0.15 0.26
Precip Begin 6 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 30 40 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows around 60. East winds 5 to 10 mph.
.FRIDAY...Partly sunny with showers likely and a chance of
thunderstorms. Highs in the upper 70s. Minimum RH 71 percent.
Southeast winds 5 to 10 mph.
.FRIDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows around 60. Southeast winds 5 to
10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 75 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows around 60. Southeast winds less than 10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 70 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. Southeast
winds less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 73 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. South
winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 71 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ018-210745-
Johnson-
Including the cities of Doeville, Mountain City, Neva,
Shady Valley, Trade, and Laurel Bloomery
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Mclear Mcldy Mcldy
Temp (24h trend) 82-87 (-2) 57-62 (-3) 75-80
RH % (24h trend) 38-43 (+3) 95-100 (+27) 60-65
RH Recovery Excellent
AM 20FT Wnd (mph) W 5 Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 9 SE 5 SW 7
Mixing Hgt(ft-agl) 6300 410 3000
Vent Rate (mph-ft) 56700 2050 21000
Max Dispersion Early 48 Gen Good 6 Very Poor 17 Gen Poor
Max Dispersion Late 51 Gen Good 3 Very Poor 17 Gen Poor
Category Day 3 1 2
Max LVORI Early 3 6 7
Max LVORI Late 2 8 4
Precip Chance (%) 50 60 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 4
Precip Amount 0.04 0.15 0.34
Precip Begin 3 PM Continuing 8 AM
Precip End Continuing 7 AM Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the upper 50s. Southeast winds
less than 10 mph.
.FRIDAY...Partly sunny with showers likely and a slight chance of
thunderstorms. Highs in the lower 70s. Minimum RH 69 percent.
Southeast winds 5 to 10 mph.
.FRIDAY NIGHT...Showers and a slight chance of thunderstorms.
Lows in the upper 50s. Southeast winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
mid 70s. Minimum RH 72 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the upper 50s. Southeast winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 67 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the upper 50s. Southeast
winds less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 68 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the upper 50s. South
winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 67 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ047-210745-
Southeast Carter-
Including the city of Hampton
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 80-85 (-3) 59-64 (-2) 74-79
RH % (24h trend) 41-46 (+6) 90-95 (+23) 66-71
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var SW 5 Lgt/Var
Transport Wnd (mph) SW 8 NW 6 S 6
Mixing Hgt(ft-agl) 6420 410 2900
Vent Rate (mph-ft) 51360 2460 17400
Max Dispersion Early 48 Gen Good 6 Very Poor 14 Gen Poor
Max Dispersion Late 48 Gen Good 3 Very Poor 12 Poor
Category Day 3 1 2
Max LVORI Early 3 5 6
Max LVORI Late 2 6 4
Precip Chance (%) 60 60 100
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.10 0.12 0.41
Precip Begin 2 PM Continuing 8 AM
Precip End Continuing 5 AM Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the upper 50s. Southeast winds
5 to 10 mph.
.FRIDAY...Partly sunny with showers likely and a chance of
thunderstorms. Highs in the lower 70s. Minimum RH 72 percent.
Southeast winds 5 to 10 mph.
.FRIDAY NIGHT...Showers and a slight chance of thunderstorms.
Lows around 60. Southeast winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
mid 70s. Minimum RH 75 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Southeast winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 71 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. Southeast
winds less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 72 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Southeast winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 72 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ045-210745-
Unicoi-
Including the cities of Erwin, Unicoi, and Limestone Cove
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 81-86 (-3) 61-66 (-2) 74-79
RH % (24h trend) 41-46 (+8) 89-94 (+22) 65-70
RH Recovery Excellent
AM 20FT Wnd (mph) W 5 Lgt/Var
PM 20FT Wnd (mph) Lgt/Var SW 5 Lgt/Var
Transport Wnd (mph) SW 8 S 5 SW 6
Mixing Hgt(ft-agl) 6330 400 2870
Vent Rate (mph-ft) 50640 2000 17220
Max Dispersion Early 42 Gen Good 5 Very Poor 15 Gen Poor
Max Dispersion Late 44 Gen Good 4 Very Poor 12 Poor
Category Day 3 1 2
Max LVORI Early 3 5 6
Max LVORI Late 3 6 4
Precip Chance (%) 60 60 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.12 0.23 0.46
Precip Begin 2 PM Continuing 10 AM
Precip End Continuing 2 AM Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Southeast winds
less than 10 mph.
.FRIDAY...Partly sunny with showers likely and a chance of
thunderstorms. Highs in the mid 70s. Minimum RH 68 percent.
Southeast winds 5 to 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. Southeast winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
mid 70s. Minimum RH 73 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 68 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 60s. Southeast
winds less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 69 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 70 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ043-210745-
Southeast Greene-
Including the city of Cedar Creek
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 81-86 (-3) 61-66 (-2) 74-79
RH % (24h trend) 41-46 (+6) 90-95 (+22) 64-69
RH Recovery Excellent
AM 20FT Wnd (mph) W 6 Lgt/Var
PM 20FT Wnd (mph) W 5 SW 7 Lgt/Var
Transport Wnd (mph) SW 8 SE 3 W 6
Mixing Hgt(ft-agl) 6180 390 2770
Vent Rate (mph-ft) 49440 1170 16620
Max Dispersion Early 42 Gen Good 7 Poor 13 Gen Poor
Max Dispersion Late 43 Gen Good 4 Very Poor 14 Gen Poor
Category Day 3 1 2
Max LVORI Early 3 5 6
Max LVORI Late 2 6 4
Precip Chance (%) 50 60 100
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.11 0.19 0.40
Precip Begin 3 PM Continuing 10 AM
Precip End Continuing 2 AM Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. Southeast
winds 5 to 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the mid
70s. Minimum RH 67 percent. Southeast winds 5 to 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. Southeast winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
mid 70s. Minimum RH 73 percent. South winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Southeast winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 69 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. Southeast
winds less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 69 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. Southeast winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 70 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ041-210745-
Cocke Smoky Mountains-
Including the city of Hartford
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 81-86 (-3) 62-67 (-2) 74-79
RH % (24h trend) 42-47 (+6) 92-97 (+23) 68-73
RH Recovery Excellent
AM 20FT Wnd (mph) NW 6 Lgt/Var
PM 20FT Wnd (mph) Lgt/Var SW 5 Lgt/Var
Transport Wnd (mph) SW 8 SE 5 W 6
Mixing Hgt(ft-agl) 5820 390 2430
Vent Rate (mph-ft) 46560 1950 14580
Max Dispersion Early 41 Gen Good 6 Very Poor 11 Poor
Max Dispersion Late 36 Fair 4 Very Poor 11 Poor
Category Day 3 1 2
Max LVORI Early 3 5 6
Max LVORI Late 3 6 4
Precip Chance (%) 70 60 100
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.16 0.08 0.37
Precip Begin 2 PM Continuing 10 AM
Precip End Continuing 2 AM Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 60s. Southeast
winds 5 to 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 67 percent. South winds 5 to 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. Southeast winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 73 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a slight chance of showers
and thunderstorms. Lows in the mid 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 70 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 60s. South winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 70 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 71 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ074-210745-
Sevier Smoky Mountains-
Including the cities of Elkmont and Gatlinburg
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 78-83 (-3) 61-66 (-1) 72-77
RH % (24h trend) 43-48 (+7) 93-98 (+21) 64-69
RH Recovery Excellent
AM 20FT Wnd (mph) SW 7 SW 5
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 9 S 6 W 7
Mixing Hgt(ft-agl) 5510 400 2310
Vent Rate (mph-ft) 49590 2400 16170
Max Dispersion Early 43 Gen Good 6 Very Poor 13 Gen Poor
Max Dispersion Late 42 Gen Good 3 Very Poor 11 Poor
Category Day 3 1 2
Max LVORI Early 4 5 5
Max LVORI Late 3 6 4
Precip Chance (%) 70 50 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 4
Precip Amount 0.14 0.02 0.44
Precip Begin 2 PM Continuing 9 AM
Precip End Continuing 2 AM Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. Southeast
winds 5 to 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the mid
70s. Minimum RH 70 percent. South winds 5 to 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. South winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
mid 70s. Minimum RH 74 percent. South winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 70 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. South
winds less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 69 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 69 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ072-210745-
Blount Smoky Mountains-
Including the city of Cades Cove
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 84-89 (-2) 63-68 (-2) 78-83
RH % (24h trend) 42-47 (+8) 94-99 (+23) 61-66
RH Recovery Excellent
AM 20FT Wnd (mph) SW 6 Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 9 S 5 W 6
Mixing Hgt(ft-agl) 5810 440 2290
Vent Rate (mph-ft) 52290 2200 13740
Max Dispersion Early 47 Gen Good 4 Very Poor 11 Poor
Max Dispersion Late 42 Gen Good 2 Very Poor 12 Poor
Category Day 3 1 2
Max LVORI Early 3 5 7
Max LVORI Late 3 6 4
Precip Chance (%) 60 50 100
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.12 0.02 0.36
Precip Begin 2 PM Continuing 8 AM
Precip End Continuing 2 AM Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 60s. Southeast
winds 5 to 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 63 percent. South winds 5 to 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 69 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. Southeast winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 65 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 65 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. Southeast winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 64 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ087-210745-
Southeast Monroe-
Including the cities of Citico and Coker Creek
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 83-88 (-1) 62-67 (-3) 77-82
RH % (24h trend) 41-46 (+5) 95-100 (+22) 62-67
RH Recovery Excellent
AM 20FT Wnd (mph) SW 5 Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 9 NW 6 SW 6
Mixing Hgt(ft-agl) 5480 420 2840
Vent Rate (mph-ft) 49320 2520 17040
Max Dispersion Early 45 Gen Good 4 Very Poor 15 Gen Poor
Max Dispersion Late 41 Gen Good 2 Very Poor 16 Gen Poor
Category Day 3 1 2
Max LVORI Early 4 6 7
Max LVORI Late 3 7 4
Precip Chance (%) 60 40 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.12 0.01 0.38
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Southeast winds
less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 65 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. Southeast winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 71 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. Southeast winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 67 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Southeast winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 67 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. Southeast winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 66 percent. South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ102-210745-
East Polk-
Including the cities of Big Frog Mountain, Ducktown,
and Turtletown
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 84-89 (-2) 61-66 (-2) 79-84
RH % (24h trend) 45-50 (+10) 95-100 (+17) 63-68
RH Recovery Excellent
AM 20FT Wnd (mph) S 7 Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 9 SE 5 SW 7
Mixing Hgt(ft-agl) 6040 400 2800
Vent Rate (mph-ft) 54360 2000 19600
Max Dispersion Early 46 Gen Good 5 Very Poor 17 Gen Poor
Max Dispersion Late 49 Gen Good 2 Very Poor 14 Gen Poor
Category Day 3 1 2
Max LVORI Early 5 7 9
Max LVORI Late 3 8 3
Precip Chance (%) 60 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.18 0.03 0.34
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Southeast winds
less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 65 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. Southeast winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 70 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. Southeast winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 66 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Southeast winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 65 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. Southeast winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 64 percent. South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
NCZ060-210745-
Cherokee-
Including the cities of Andrews, Marble, Topton, Hiawasse Dam,
Murphy, Unaka, and Violet
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 84-89 (-1) 60-65 (-1) 78-83
RH % (24h trend) 45-50 (+9) 95-100 (+17) 60-65
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 8 NW 5 SW 7
Mixing Hgt(ft-agl) 5350 400 2800
Vent Rate (mph-ft) 42800 2000 19600
Max Dispersion Early 37 Fair 3 Very Poor 17 Gen Poor
Max Dispersion Late 38 Fair 2 Very Poor 17 Gen Poor
Category Day 3 1 2
Max LVORI Early 5 8 9
Max LVORI Late 3 9 3
Precip Chance (%) 60 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.07 0.08 0.32
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Southeast winds
less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 66 percent. Southeast winds less than
10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. Southeast winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 70 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely and a chance
of thunderstorms. Lows in the lower 60s. Southeast winds less
than 10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 66 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Southeast winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 66 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 60s. Southeast winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 65 percent. South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
NCZ061-210745-
Clay-
Including the cities of Shooting Creek, Brasstown, Hayesville,
and Tusquitee
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Pcldy Mcldy
Temp (24h trend) 80-85 (-2) 59-64 (-1) 75-80
RH % (24h trend) 51-56 (+11) 95-100 (+16) 67-72
RH Recovery Excellent
AM 20FT Wnd (mph) SW 5 Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 8 E 5 SW 8
Mixing Hgt(ft-agl) 5360 420 2900
Vent Rate (mph-ft) 42880 2100 23200
Max Dispersion Early 35 Fair 3 Very Poor 19 Gen Poor
Max Dispersion Late 39 Fair 2 Very Poor 21 Fair
Category Day 3 1 2
Max LVORI Early 5 7 8
Max LVORI Late 3 7 4
Precip Chance (%) 50 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.07 0.05 0.22
Precip Begin 2 PM Continuing 9 AM
Precip End Continuing 2 AM Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Showers and a slight chance of thunderstorms.
Lows in the lower 60s. Southeast winds less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the mid
70s. Minimum RH 74 percent. Southeast winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. Southeast winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
mid 70s. Minimum RH 76 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely and a chance
of thunderstorms. Lows in the lower 60s. Southeast winds less
than 10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 73 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Southeast winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 72 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 60s. Southeast winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 71 percent. South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ015-210745-
Hancock-
Including the cities of Evanston, Sneedville, Treadway,
and Kyles Ford
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-1) 59-64 (-3) 79-84
RH % (24h trend) 43-48 (+8) 95-100 (+13) 66-71
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 12 E 5 W 6
Mixing Hgt(ft-agl) 6730 400 3330
Vent Rate (mph-ft) 80760 2000 19980
Max Dispersion Early 63 Good 4 Very Poor 12 Poor
Max Dispersion Late 66 Good 2 Very Poor 15 Gen Poor
Category Day 4 1 2
Max LVORI Early 5 7 10
Max LVORI Late 2 10 4
Precip Chance (%) 50 50 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.06 0.03 0.16
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 40 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 72 percent. Southeast winds less than
10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. Southeast winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 74 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Light and variable wind.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 67 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Light and
variable wind.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 60s. Light and variable wind.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 67 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ016-210745-
Hawkins-
Including the city of Mooresburg
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-2) 60-65 (-2) 79-84
RH % (24h trend) 44-49 (+7) 95-100 (+13) 66-71
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) W 5 W 5 Lgt/Var
Transport Wnd (mph) SW 10 NE 5 W 6
Mixing Hgt(ft-agl) 6890 390 3470
Vent Rate (mph-ft) 68900 1950 20820
Max Dispersion Early 56 Gen Good 5 Very Poor 13 Gen Poor
Max Dispersion Late 62 Good 2 Very Poor 17 Gen Poor
Category Day 4 1 2
Max LVORI Early 6 7 9
Max LVORI Late 2 10 4
Precip Chance (%) 40 50 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.03 0.03 0.19
Precip Begin 4 PM Continuing 8 AM
Precip End Continuing 6 AM Continuing
Chance of Thunder (%) 40 40 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 73 percent. Southeast winds less than
10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. Southeast winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 76 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 69 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 60s. Southwest winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ017-210745-
Sullivan-
Including the cities of Kingsport, Bristol TN,
and South Holston Dam
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Mclear Mcldy Pcldy
Temp (24h trend) 85-90 (-2) 61-66 (-2) 78-83
RH % (24h trend) 40-45 (+3) 95-100 (+21) 65-70
RH Recovery Excellent
AM 20FT Wnd (mph) W 6 Lgt/Var
PM 20FT Wnd (mph) W 6 N 6 Lgt/Var
Transport Wnd (mph) SW 10 NE 5 W 7
Mixing Hgt(ft-agl) 6720 370 3030
Vent Rate (mph-ft) 67200 1850 21210
Max Dispersion Early 52 Gen Good 6 Very Poor 15 Gen Poor
Max Dispersion Late 59 Gen Good 2 Very Poor 17 Gen Poor
Category Day 4 1 2
Max LVORI Early 4 6 8
Max LVORI Late 2 8 4
Precip Chance (%) 40 70 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 4
Precip Amount 0.02 0.14 0.25
Precip Begin 5 PM Continuing 8 AM
Precip End Continuing 6 AM Continuing
Chance of Thunder (%) 40 40 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. East winds 5 to
10 mph.
.FRIDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Highs around 80. Minimum RH 66 percent. Southeast
winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. Southeast winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 72 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Southeast winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 67 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. Southeast
winds less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 69 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 67 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ046-210745-
Northwest Carter-
Including the city of Elizabethton
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Mclear Mcldy Mcldy
Temp (24h trend) 84-89 (-1) 59-64 (-3) 77-82
RH % (24h trend) 38-43 (+2) 95-100 (+25) 62-67
RH Recovery Excellent
AM 20FT Wnd (mph) W 5 Lgt/Var
PM 20FT Wnd (mph) W 5 Lgt/Var Lgt/Var
Transport Wnd (mph) SW 9 N 5 SW 6
Mixing Hgt(ft-agl) 6730 410 3180
Vent Rate (mph-ft) 60570 2050 19080
Max Dispersion Early 49 Gen Good 5 Very Poor 15 Gen Poor
Max Dispersion Late 53 Gen Good 3 Very Poor 16 Gen Poor
Category Day 4 1 2
Max LVORI Early 3 7 7
Max LVORI Late 2 8 3
Precip Chance (%) 50 70 100
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 4
Precip Amount 0.11 0.19 0.24
Precip Begin 4 PM Continuing 8 AM
Precip End Continuing 2 AM Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Southeast winds
less than 10 mph.
.FRIDAY...Partly sunny with showers likely and a chance of
thunderstorms. Highs in the upper 70s. Minimum RH 63 percent.
Southeast winds 5 to 10 mph.
.FRIDAY NIGHT...Showers and a slight chance of thunderstorms.
Lows in the lower 60s. Southeast winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 69 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Southeast winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 64 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. Southeast
winds less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 66 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Light and variable wind.
.TUESDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 66 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ044-210745-
Washington TN-
Including the city of Johnson City
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 85-90 (-3) 61-66 (-2) 78-83
RH % (24h trend) 40-45 (+4) 95-100 (+25) 63-68
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) W 5 Lgt/Var Lgt/Var
Transport Wnd (mph) SW 9 E 3 W 6
Mixing Hgt(ft-agl) 6730 350 2960
Vent Rate (mph-ft) 60570 1050 17760
Max Dispersion Early 50 Gen Good 5 Very Poor 13 Gen Poor
Max Dispersion Late 54 Gen Good 3 Very Poor 16 Gen Poor
Category Day 4 1 2
Max LVORI Early 3 5 7
Max LVORI Late 2 7 3
Precip Chance (%) 50 60 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.08 0.19 0.36
Precip Begin 4 PM Continuing 8 AM
Precip End Continuing 2 AM Continuing
Chance of Thunder (%) 40 40 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 63 percent. Southeast winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. Southeast winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 69 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Southeast winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 65 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. Southeast
winds less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 66 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Southeast winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 66 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ042-210745-
Northwest Greene-
Including the city of Greeneville
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-2) 61-66 (-2) 79-84
RH % (24h trend) 42-47 (+5) 95-100 (+22) 64-69
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) W 6 W 6 Lgt/Var
Transport Wnd (mph) SW 9 E 5 W 6
Mixing Hgt(ft-agl) 6570 360 3080
Vent Rate (mph-ft) 59130 1800 18480
Max Dispersion Early 50 Gen Good 8 Poor 13 Gen Poor
Max Dispersion Late 51 Gen Good 3 Very Poor 16 Gen Poor
Category Day 4 1 2
Max LVORI Early 4 6 8
Max LVORI Late 2 8 3
Precip Chance (%) 50 60 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.04 0.10 0.28
Precip Begin 4 PM Continuing 11 AM
Precip End Continuing 2 AM Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. East winds
less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 65 percent. Southeast winds less than
10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. Southeast winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 70 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Southeast winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 66 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Southeast winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 67 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 67 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ038-210745-
Grainger-
Including the city of Bean Station
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-2) 61-66 (-2) 79-84
RH % (24h trend) 44-49 (+7) 95-100 (+14) 66-71
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) W 5 Lgt/Var Lgt/Var
Transport Wnd (mph) SW 12 NE 5 W 6
Mixing Hgt(ft-agl) 6540 380 2880
Vent Rate (mph-ft) 78480 1900 17280
Max Dispersion Early 63 Good 4 Very Poor 13 Gen Poor
Max Dispersion Late 65 Good 2 Very Poor 14 Gen Poor
Category Day 4 1 2
Max LVORI Early 5 7 9
Max LVORI Late 3 9 4
Precip Chance (%) 50 50 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.06 0.02 0.27
Precip Begin 2 PM Continuing 8 AM
Precip End Continuing 4 AM Continuing
Chance of Thunder (%) 40 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 71 percent. Southeast winds less than
10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. Southeast winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 75 percent. Southwest winds less than
10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Light and
variable wind.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. West winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ039-210745-
Hamblen-
Including the cities of Alpha, Morristown, and Russellville
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-1) 61-66 (-2) 79-84
RH % (24h trend) 43-48 (+3) 95-100 (+11) 67-72
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 NE 5 W 6
Mixing Hgt(ft-agl) 6650 370 2850
Vent Rate (mph-ft) 66500 1850 17100
Max Dispersion Early 61 Good 4 Very Poor 13 Gen Poor
Max Dispersion Late 61 Good 2 Very Poor 14 Gen Poor
Category Day 4 1 2
Max LVORI Early 6 7 9
Max LVORI Late 2 10 4
Precip Chance (%) 50 50 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.06 0.04 0.29
Precip Begin 3 PM Continuing 10 AM
Precip End Continuing 3 AM Continuing
Chance of Thunder (%) 40 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 71 percent. Southeast winds less than
10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. Southeast winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 75 percent. Southwest winds less than
10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Light and variable wind.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Light and
variable wind.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 60s. Light and variable wind.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 69 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ040-210745-
Northwest Cocke-
Including the cities of Bybee and Newport
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 85-90 (-2) 63-68 (-2) 78-83
RH % (24h trend) 44-49 (+5) 95-100 (+21) 68-73
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 9 E 3 W 6
Mixing Hgt(ft-agl) 6250 350 2550
Vent Rate (mph-ft) 56250 1050 15300
Max Dispersion Early 49 Gen Good 7 Poor 12 Poor
Max Dispersion Late 46 Gen Good 2 Very Poor 13 Gen Poor
Category Day 3 1 2
Max LVORI Early 4 5 8
Max LVORI Late 2 8 4
Precip Chance (%) 60 60 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.09 0.13 0.32
Precip Begin 2 PM Continuing 10 AM
Precip End Continuing 2 AM Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 60s. Southeast
winds less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 65 percent. Southeast winds less than
10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. Southeast winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 71 percent. Southwest winds less than
10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 66 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 60s. Southeast
winds less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 67 percent. West winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 67 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ070-210745-
Jefferson-
Including the cities of Jefferson City, Strawberry Plains,
Chestnut Hill, Dandridge, and White Pine
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-1) 63-68 (-2) 79-84
RH % (24h trend) 45-50 (+6) 95-100 (+16) 69-74
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 E 5 W 7
Mixing Hgt(ft-agl) 6610 360 2690
Vent Rate (mph-ft) 66100 1800 18830
Max Dispersion Early 62 Good 4 Very Poor 13 Gen Poor
Max Dispersion Late 60 Gen Good 2 Very Poor 15 Gen Poor
Category Day 4 1 2
Max LVORI Early 5 6 9
Max LVORI Late 2 9 4
Precip Chance (%) 50 50 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.06 0.06 0.28
Precip Begin 2 PM Continuing 10 AM
Precip End Continuing 3 AM Continuing
Chance of Thunder (%) 40 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. Southeast winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 74 percent. Southwest winds less than
10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. Light and variable wind.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Light and variable
wind.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 69 percent. West winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. Light and variable wind.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ035-210745-
Morgan-
Including the cities of Pine Orchard, High Point, and Petros
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 83-88 (-2) 59-64 (-3) 77-82
RH % (24h trend) 56-61 (+12) 95-100 (+11) 71-76
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 N 6 SE 5
Mixing Hgt(ft-agl) 4600 420 2140
Vent Rate (mph-ft) 46000 2520 10700
Max Dispersion Early 45 Gen Good 2 Very Poor 10 Poor
Max Dispersion Late 35 Fair 2 Very Poor 11 Poor
Category Day 3 1 1
Max LVORI Early 6 7 10
Max LVORI Late 4 10 5
Precip Chance (%) 80 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 3 1 3
Precip Amount 0.26 0.01 0.19
Precip Begin 11 AM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 74 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. South winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 75 percent. South winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 71 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 73 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 69 percent. South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ012-210745-
Scott TN-
Including the cities of Big South Fork National, Oneida,
Smokey Junction, Elgin, Huntsville, Norma, and Slick Rock
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 82-87 (-2) 60-65 (-4) 75-80
RH % (24h trend) 57-62 (+12) 95-100 (+16) 70-75
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 12 E 5 SE 7
Mixing Hgt(ft-agl) 4410 410 1870
Vent Rate (mph-ft) 52920 2050 13090
Max Dispersion Early 45 Gen Good 4 Very Poor 8 Poor
Max Dispersion Late 35 Fair 2 Very Poor 12 Poor
Category Day 3 1 1
Max LVORI Early 5 7 8
Max LVORI Late 4 8 4
Precip Chance (%) 90 50 80
Precip Type Tstms Tstms Tstms
Precip Duration 3 1 3
Precip Amount 0.42 0.03 0.16
Precip Begin 11 AM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 71 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 72 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 69 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 65 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ013-210745-
Campbell-
Including the cities of Fincastle, La Follette, Elk Valley,
Jellico, White Oak, Caryville, and Royal Blue
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 81-86 (-3) 61-66 (-3) 74-79
RH % (24h trend) 53-58 (+11) 95-100 (+18) 72-77
RH Recovery Excellent
AM 20FT Wnd (mph) SW 5 Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 12 E 5 N 7
Mixing Hgt(ft-agl) 5500 390 1980
Vent Rate (mph-ft) 66000 1950 13860
Max Dispersion Early 55 Gen Good 5 Very Poor 7 Poor
Max Dispersion Late 47 Gen Good 2 Very Poor 12 Poor
Category Day 4 1 1
Max LVORI Early 4 6 8
Max LVORI Late 4 8 4
Precip Chance (%) 90 50 80
Precip Type Tstms Tstms Tstms
Precip Duration 3 1 3
Precip Amount 0.24 0.02 0.21
Precip Begin 11 AM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 77 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 78 percent. South winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 73 percent. Southwest winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 74 percent. Southwest winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 71 percent. Southwest winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ014-210745-
Claiborne-
Including the cities of Lone Mountain, Sandlick, Springdale,
Arthur, Harrogate-Shawanee, Clairfield, and Howard Quarter
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 85-90 (-2) 60-65 (-2) 77-82
RH % (24h trend) 44-49 (+7) 95-100 (+14) 66-71
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 12 NE 5 SE 5
Mixing Hgt(ft-agl) 6170 400 2470
Vent Rate (mph-ft) 74040 2000 12350
Max Dispersion Early 62 Good 5 Very Poor 11 Poor
Max Dispersion Late 61 Good 2 Very Poor 12 Poor
Category Day 4 1 1
Max LVORI Early 5 8 10
Max LVORI Late 3 10 4
Precip Chance (%) 70 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 4
Precip Amount 0.15 0.03 0.18
Precip Begin 12 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 73 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 76 percent. Southwest winds less than
10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ037-210745-
Union-
Including the cities of Maynardville, Norris Lake, Paulette,
Rose Hill, Sharps Chapel, and Luttrell
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 85-90 (-2) 61-66 (-3) 78-83
RH % (24h trend) 47-52 (+10) 95-100 (+17) 67-72
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 12 NE 5 SW 6
Mixing Hgt(ft-agl) 6270 380 2570
Vent Rate (mph-ft) 75240 1900 15420
Max Dispersion Early 62 Good 4 Very Poor 12 Poor
Max Dispersion Late 63 Good 2 Very Poor 14 Gen Poor
Category Day 4 1 2
Max LVORI Early 4 7 8
Max LVORI Late 3 8 4
Precip Chance (%) 70 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.14 0.02 0.20
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 40 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Showers and a slight chance of thunderstorms.
Lows in the lower 60s. Northeast winds less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 72 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 76 percent. Southwest winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 69 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Southwest winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 72 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. Southwest winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 69 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ036-210745-
Anderson-
Including the cities of Oak Ridge and Clinton
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Pcldy
Temp (24h trend) 83-88 (-2) 61-66 (-3) 77-82
RH % (24h trend) 48-53 (+8) 95-100 (+17) 66-71
RH Recovery Excellent
AM 20FT Wnd (mph) SW 6 Lgt/Var
PM 20FT Wnd (mph) W 5 NE 5 Lgt/Var
Transport Wnd (mph) SW 12 NE 6 S 5
Mixing Hgt(ft-agl) 5910 400 2760
Vent Rate (mph-ft) 70920 2400 13800
Max Dispersion Early 61 Good 3 Very Poor 12 Poor
Max Dispersion Late 58 Gen Good 2 Very Poor 14 Gen Poor
Category Day 4 1 1
Max LVORI Early 5 7 9
Max LVORI Late 3 9 5
Precip Chance (%) 70 40 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.09 0.02 0.23
Precip Begin 1 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Northeast winds
less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 76 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds 5 to 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 80 percent. Southwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Southwest winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 74 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Southwest winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 75 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. Southwest winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 72 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ069-210745-
Knox-
Including the cities of Bearden, Knoxville, and Lake Forest
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-2) 63-68 (-2) 79-84
RH % (24h trend) 45-50 (+8) 95-100 (+20) 66-71
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) W 5 Lgt/Var Lgt/Var
Transport Wnd (mph) SW 12 NE 6 S 7
Mixing Hgt(ft-agl) 6650 370 3230
Vent Rate (mph-ft) 79800 2220 22610
Max Dispersion Early 64 Good 3 Very Poor 15 Gen Poor
Max Dispersion Late 67 Good 3 Very Poor 18 Gen Poor
Category Day 4 1 2
Max LVORI Early 4 6 8
Max LVORI Late 3 8 4
Precip Chance (%) 60 40 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.06 0.03 0.29
Precip Begin 2 PM Continuing 9 AM
Precip End Continuing 8 AM Continuing
Chance of Thunder (%) 40 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Northeast winds
less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 75 percent. Southwest winds less than
10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. Southwest winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Southwest winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. Southwest winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ073-210745-
North Sevier-
Including the cities of Harrisburg, Kodak, McMahan, Sevierville,
Seymour, and Pigeon Forge
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-2) 63-68 (-2) 79-84
RH % (24h trend) 44-49 (+7) 95-100 (+20) 66-71
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 E 5 NW 6
Mixing Hgt(ft-agl) 6440 360 2360
Vent Rate (mph-ft) 64400 1800 14160
Max Dispersion Early 58 Gen Good 5 Very Poor 11 Poor
Max Dispersion Late 53 Gen Good 3 Very Poor 13 Gen Poor
Category Day 4 1 2
Max LVORI Early 4 5 7
Max LVORI Late 2 7 4
Precip Chance (%) 60 50 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.15 0.05 0.25
Precip Begin 2 PM Continuing 9 AM
Precip End Continuing 2 AM Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Southeast winds
less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 65 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 71 percent. Southwest winds less than
10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 67 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 67 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. Southwest winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 66 percent. West winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ067-210745-
Roane-
Including the cities of Harriman, Eagle Furnace, Rockwood,
Bradbury, Fairview, Kingston, and Oliver Springs
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-1) 61-66 (-2) 80-85
RH % (24h trend) 49-54 (+9) 95-100 (+11) 69-74
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 NW 6 S 5
Mixing Hgt(ft-agl) 5880 420 2820
Vent Rate (mph-ft) 58800 2520 14100
Max Dispersion Early 55 Gen Good 3 Very Poor 13 Gen Poor
Max Dispersion Late 56 Gen Good 2 Very Poor 15 Gen Poor
Category Day 4 1 1
Max LVORI Early 6 7 9
Max LVORI Late 4 10 5
Precip Chance (%) 70 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.12 0.02 0.16
Precip Begin 12 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Northeast winds
less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 75 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 79 percent. Southwest winds less than
10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 73 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Southwest winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 75 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 60s. Southwest winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 72 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ068-210745-
Loudon-
Including the cities of Lenoir City and Loudon
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 87-92 (-1) 62-67 (-1) 80-85
RH % (24h trend) 48-53 (+9) 95-100 (+15) 69-74
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) W 5 Lgt/Var Lgt/Var
Transport Wnd (mph) SW 12 NE 6 S 6
Mixing Hgt(ft-agl) 6820 440 3360
Vent Rate (mph-ft) 81840 2640 20160
Max Dispersion Early 62 Good 4 Very Poor 14 Gen Poor
Max Dispersion Late 67 Good 3 Very Poor 17 Gen Poor
Category Day 4 1 2
Max LVORI Early 5 7 9
Max LVORI Late 3 10 4
Precip Chance (%) 60 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.06 0.02 0.16
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 40 30 40
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 72 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 78 percent. Southwest winds less than
10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 72 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Southwest winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 74 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 71 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ071-210745-
Northwest Blount-
Including the cities of Happy Valley, Maryville, and Alcoa
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-1) 64-69 (-2) 80-85
RH % (24h trend) 46-51 (+8) 95-100 (+23) 68-73
RH Recovery Excellent
AM 20FT Wnd (mph) SW 5 Lgt/Var
PM 20FT Wnd (mph) SW 7 Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 NE 6 W 6
Mixing Hgt(ft-agl) 6520 420 2910
Vent Rate (mph-ft) 65200 2520 17460
Max Dispersion Early 60 Gen Good 4 Very Poor 12 Poor
Max Dispersion Late 62 Good 3 Very Poor 17 Gen Poor
Category Day 4 1 2
Max LVORI Early 4 6 8
Max LVORI Late 3 8 4
Precip Chance (%) 60 50 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.08 0.03 0.37
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 66 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the upper 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 74 percent. Southwest winds less than
10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the mid
80s. Minimum RH 69 percent. Southwest winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the mid
80s. Minimum RH 70 percent. Southwest winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ086-210745-
Northwest Monroe-
Including the cities of Sweetwater, Madisonville,
and Bullet Creek
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 87-92 (-1) 62-67 (-3) 81-86
RH % (24h trend) 46-51 (+9) 95-100 (+20) 67-72
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) SW 5 Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 E 5 SW 6
Mixing Hgt(ft-agl) 6680 410 3300
Vent Rate (mph-ft) 66800 2050 19800
Max Dispersion Early 57 Gen Good 4 Very Poor 12 Poor
Max Dispersion Late 61 Good 3 Very Poor 21 Fair
Category Day 4 1 2
Max LVORI Early 4 7 9
Max LVORI Late 3 10 4
Precip Chance (%) 60 40 90
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.09 0.01 0.31
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Southeast winds
less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 74 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely and a chance
of thunderstorms. Lows in the mid 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the mid
80s. Minimum RH 69 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the mid
80s. Minimum RH 70 percent. Southwest winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. Southwest winds less than
10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ083-210745-
Rhea-
Including the cities of Dayton, Evensville, Old Washington,
Grandview, and Spring City
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 84-89 (-1) 61-66 (-2) 78-83
RH % (24h trend) 56-61 (+10) 95-100 (+10) 72-77
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 NE 3 SE 5
Mixing Hgt(ft-agl) 5430 410 2630
Vent Rate (mph-ft) 54300 1230 13150
Max Dispersion Early 51 Gen Good 3 Very Poor 9 Poor
Max Dispersion Late 42 Gen Good 2 Very Poor 14 Gen Poor
Category Day 4 1 1
Max LVORI Early 6 8 10
Max LVORI Late 4 10 5
Precip Chance (%) 80 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 2 1 3
Precip Amount 0.25 0.02 0.18
Precip Begin 12 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Showers and a slight chance of thunderstorms.
Lows in the lower 60s. East winds less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 79 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 83 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 77 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 79 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 74 percent. South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ084-210745-
Meigs-
Including the city of Big Spring
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-1) 61-66 (-2) 81-86
RH % (24h trend) 50-55 (+10) 95-100 (+12) 67-72
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 12 NE 5 S 6
Mixing Hgt(ft-agl) 5900 400 3100
Vent Rate (mph-ft) 70800 2000 18600
Max Dispersion Early 56 Gen Good 2 Very Poor 13 Gen Poor
Max Dispersion Late 54 Gen Good 3 Very Poor 15 Gen Poor
Category Day 4 1 2
Max LVORI Early 5 8 9
Max LVORI Late 3 10 4
Precip Chance (%) 70 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.10 0.03 0.23
Precip Begin 1 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Showers and a slight chance of thunderstorms.
Lows in the lower 60s. Light and variable wind.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 73 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 78 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. Light and variable wind.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 72 percent. Southwest winds less than
10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Light and variable
wind.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 74 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. Light and variable wind.
.TUESDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Highs in the lower 80s. Minimum RH 69 percent.
South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ085-210745-
McMinn-
Including the cities of Athens, Clear Water, Dentville,
and Etowah
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 87-92 (-1) 61-66 (-2) 81-86
RH % (24h trend) 46-51 (+9) 95-100 (+14) 65-70
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) W 5 Lgt/Var Lgt/Var
Transport Wnd (mph) SW 12 NE 5 S 7
Mixing Hgt(ft-agl) 6720 370 3450
Vent Rate (mph-ft) 80640 1850 24150
Max Dispersion Early 56 Gen Good 4 Very Poor 13 Gen Poor
Max Dispersion Late 63 Good 3 Very Poor 25 Fair
Category Day 4 1 2
Max LVORI Early 5 8 9
Max LVORI Late 3 10 4
Precip Chance (%) 60 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.09 0.02 0.29
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Showers and a slight chance of thunderstorms.
Lows in the lower 60s. Southeast winds less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 69 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 75 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 71 percent. Southwest winds less than
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.TUESDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Highs in the lower 80s. Minimum RH 68 percent.
Southwest winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ099-210745-
Hamilton-
Including the cities of Chattanooga, Lookout Mountain,
and Signal Mountain
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 85-90 (0) 63-68 (-2) 80-85
RH % (24h trend) 52-57 (+8) 95-100 (+15) 67-72
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 NE 5 S 6
Mixing Hgt(ft-agl) 5480 390 3250
Vent Rate (mph-ft) 54800 1950 19500
Max Dispersion Early 47 Gen Good 4 Very Poor 15 Gen Poor
Max Dispersion Late 43 Gen Good 2 Very Poor 18 Gen Poor
Category Day 4 1 2
Max LVORI Early 5 7 8
Max LVORI Late 4 8 5
Precip Chance (%) 70 50 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.15 0.05 0.17
Precip Begin 12 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Showers and a slight chance of thunderstorms.
Lows in the mid 60s. East winds less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 72 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 77 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 72 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 74 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ100-210745-
Bradley-
Including the cities of Cleveland and Tasso
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-1) 62-67 (-2) 81-86
RH % (24h trend) 47-52 (+9) 95-100 (+16) 65-70
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 NE 5 S 7
Mixing Hgt(ft-agl) 6700 380 3780
Vent Rate (mph-ft) 67000 1900 26460
Max Dispersion Early 53 Gen Good 3 Very Poor 15 Gen Poor
Max Dispersion Late 61 Good 2 Very Poor 23 Fair
Category Day 4 1 2
Max LVORI Early 5 9 10
Max LVORI Late 3 10 3
Precip Chance (%) 60 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.20 0.01 0.27
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. East winds less
than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 66 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 73 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 68 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 69 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 66 percent. South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ101-210745-
West Polk-
Including the cities of Conasauga, Archville, Benton, Parksville,
and Reliance
240 AM EDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 86-91 (-1) 63-68 (-2) 81-86
RH % (24h trend) 44-49 (+9) 95-100 (+21) 62-67
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 E 5 SW 7
Mixing Hgt(ft-agl) 6710 370 3590
Vent Rate (mph-ft) 67100 1850 25130
Max Dispersion Early 55 Gen Good 5 Very Poor 18 Gen Poor
Max Dispersion Late 59 Gen Good 2 Very Poor 23 Fair
Category Day 4 1 2
Max LVORI Early 4 6 9
Max LVORI Late 3 9 3
Precip Chance (%) 60 40 80
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 3
Precip Amount 0.07 0.03 0.31
Precip Begin 2 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 40 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Southeast winds
less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 63 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 69 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely and a chance
of thunderstorms. Lows in the mid 60s. Southeast winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 65 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Southeast winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 65 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. Southeast winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 63 percent. South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ082-210745-
Bledsoe-
Including the cities of Old Cumberland, Palio, Melvine,
Mount Crest, Pikeville, and Brayton
140 AM CDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 81-86 (-2) 60-65 (-3) 76-81
RH % (24h trend) 61-66 (+11) 95-100 (+12) 75-80
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 E 5 S 6
Mixing Hgt(ft-agl) 4600 420 2610
Vent Rate (mph-ft) 46000 2100 15660
Max Dispersion Early 42 Gen Good 4 Very Poor 9 Poor
Max Dispersion Late 32 Fair 2 Very Poor 14 Gen Poor
Category Day 3 1 2
Max LVORI Early 6 8 10
Max LVORI Late 5 9 5
Precip Chance (%) 80 50 80
Precip Type Tstms Tstms Tstms
Precip Duration 3 1 4
Precip Amount 0.28 0.02 0.26
Precip Begin 12 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Southeast winds
less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 78 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the lower 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 79 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 76 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 77 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the lower 60s. South winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 73 percent. South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ081-210745-
Sequatchie-
Including the cities of Cagle, Dunlap, Cartwright, and Lone Oak
140 AM CDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 81-86 (0) 61-66 (-3) 76-81
RH % (24h trend) 61-66 (+8) 95-100 (+15) 77-82
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 W 6 S 6
Mixing Hgt(ft-agl) 4550 420 2760
Vent Rate (mph-ft) 45500 2520 16560
Max Dispersion Early 42 Gen Good 4 Very Poor 9 Poor
Max Dispersion Late 35 Fair 2 Very Poor 14 Gen Poor
Category Day 3 1 2
Max LVORI Early 5 8 9
Max LVORI Late 4 8 6
Precip Chance (%) 80 50 70
Precip Type Tstms Tstms Tstms
Precip Duration 2 1 2
Precip Amount 0.23 0.03 0.21
Precip Begin 12 PM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Showers and a slight chance of thunderstorms.
Lows in the lower 60s. Southeast winds less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 80 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 81 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 79 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. South winds less
than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 79 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. South winds less than 10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs around
80. Minimum RH 75 percent. South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
TNZ098-210745-
Marion-
Including the cities of South Pittsburg, Haletown (Guild),
Jasper, Martin Springs, Whitwell, Powells Crossroads,
and Monteagle
140 AM CDT Wed May 20 2026
Today Tonight Thu
Cloud Cover Pcldy Mcldy Mcldy
Temp (24h trend) 81-86 (0) 62-67 (-3) 77-82
RH % (24h trend) 59-64 (+8) 95-100 (+14) 70-75
RH Recovery Excellent
AM 20FT Wnd (mph) Lgt/Var Lgt/Var
PM 20FT Wnd (mph) Lgt/Var Lgt/Var Lgt/Var
Transport Wnd (mph) SW 10 NE 3 SW 6
Mixing Hgt(ft-agl) 4490 390 2540
Vent Rate (mph-ft) 44900 1170 15240
Max Dispersion Early 41 Gen Good 3 Very Poor 11 Poor
Max Dispersion Late 37 Fair 2 Very Poor 12 Poor
Category Day 3 1 2
Max LVORI Early 5 7 8
Max LVORI Late 4 7 4
Precip Chance (%) 70 50 70
Precip Type Tstms Tstms Tstms
Precip Duration 1 1 2
Precip Amount 0.20 0.05 0.14
Precip Begin 11 AM Continuing Continuing
Precip End Continuing Continuing Continuing
Chance of Thunder (%) 50 30 50
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. East winds less than 10 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 74 percent. South winds less than 10 mph.
.FRIDAY NIGHT...Showers and a chance of thunderstorms. Lows in
the mid 60s. South winds less than 10 mph.
.SATURDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 76 percent. South winds less than 10 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Lows in the mid 60s. Southeast winds less than
10 mph.
.SUNDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 73 percent. South winds less than 10 mph.
.SUNDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the mid 60s. Southeast winds
less than 10 mph.
.MONDAY...Showers and a chance of thunderstorms. Highs around 80.
Minimum RH 73 percent. South winds less than 10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows in the mid 60s. Southeast winds less than
10 mph.
.TUESDAY...Showers and a chance of thunderstorms. Highs in the
lower 80s. Minimum RH 70 percent. South winds less than 10 mph.
*The AGL Mixing Height is calculated from an average elevation for
the entire Forecast Zone and should only be used as a guide.
For a specific AGL Mixing Height a Spot Forecast will be needed.
$$
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