Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Paducah KY
1111 AM CDT Tue Jul 21 2026
ILZ075-080>082-084>094-KYZ001>017-021-022-MOZ076-086-087-100-107>112-
114-220000-
/O.EXP.KPAH.HT.Y.0004.000000T0000Z-260721T1600Z/
/O.CON.KPAH.XH.W.0002.000000T0000Z-260722T0000Z/
Jefferson-Perry IL-Franklin-Hamilton-Jackson-Williamson-Saline-
Gallatin-Union-Johnson-Pope-Hardin-Alexander-Pulaski-Massac-Fulton-
Hickman-Carlisle-Ballard-McCracken-Graves-Livingston-Marshall-
Calloway-Crittenden-Lyon-Trigg-Caldwell-Union KY-Webster-Hopkins-
Christian-Muhlenberg-Todd-Perry MO-Bollinger-Cape Girardeau-Wayne MO-
Carter-Ripley-Butler-Stoddard-Scott-Mississippi-New Madrid-
Including the cities of McLeansboro, Benton, Elizabethtown,
Smithland, Doniphan, Herrin, Paducah, Van Buren, Perryville,
Pinckneyville, Princeton, Harrisburg, Madisonville, Cairo,
Hopkinsville, Bloomfield, Shawneetown, Jonesboro, West Frankfort,
Morganfield, Metropolis, Bardwell, Carbondale, Eddyville, Golconda,
Clinton, Charleston, Jackson, Murray, Wickliffe, New Madrid,
Piedmont, Marble Hill, Cadiz, Mayfield, Dixon, Elkton, Cape
Girardeau, Hickman, Sikeston, Vienna, Marion, Mount Vernon,
Greenville, Poplar Bluff, Mound City, and Murphysboro
1111 AM CDT Tue Jul 21 2026
...HEAT ADVISORY HAS EXPIRED...
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...
* WHAT...Dangerously hot conditions with heat index values of 110 to
116.
* WHERE...Portions of southern Illinois, western Kentucky, and
southeast Missouri.
* WHEN...Until 7 PM CDT this evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
Severe Thunderstorm Watch
WATCH COUNTY NOTIFICATION FOR WATCH 508
NATIONAL WEATHER SERVICE PADUCAH KY
248 PM CDT TUE JUL 21 2026
ILC047-055-059-065-069-087-127-151-153-165-185-193-199-INC051-125-
129-147-163-173-KYC007-033-035-039-047-055-059-083-101-105-107-
139-143-145-149-157-177-219-221-225-233-220200-
/O.CON.KPAH.SV.A.0508.000000T0000Z-260722T0200Z/
SEVERE THUNDERSTORM WATCH 508 REMAINS VALID UNTIL 9 PM CDT /10 PM
EDT/ THIS EVENING FOR THE FOLLOWING AREAS
IN ILLINOIS THIS WATCH INCLUDES 13 COUNTIES
IN SOUTHEAST ILLINOIS
EDWARDS
IN SOUTHERN ILLINOIS
FRANKLIN GALLATIN HAMILTON
HARDIN JOHNSON MASSAC
POPE PULASKI SALINE
WABASH WHITE WILLIAMSON
IN INDIANA THIS WATCH INCLUDES 6 COUNTIES
IN SOUTHWEST INDIANA
POSEY
IN SOUTHWEST INDIANA
GIBSON PIKE SPENCER
VANDERBURGH WARRICK
IN KENTUCKY THIS WATCH INCLUDES 21 COUNTIES
IN WESTERN KENTUCKY
BALLARD CALDWELL CALLOWAY
CARLISLE CHRISTIAN CRITTENDEN
DAVIESS GRAVES HENDERSON
HICKMAN HOPKINS LIVINGSTON
LYON MARSHALL MCCRACKEN
MCLEAN MUHLENBERG TODD
TRIGG UNION WEBSTER
THIS INCLUDES THE CITIES OF ALBION, BARDWELL, BENTON, BOONVILLE,
CADIZ, CALHOUN, CARMI, CLINTON, DIXON, EDDYVILLE, ELIZABETHTOWN,
ELKTON, EVANSVILLE, FORT BRANCH, GOLCONDA, GRAYVILLE, GREENVILLE,
HARRISBURG, HENDERSON, HERRIN, HOPKINSVILLE, MADISONVILLE,
MARION, MAYFIELD, MCLEANSBORO, METROPOLIS, MORGANFIELD,
MOUND CITY, MOUNT CARMEL, MURRAY, OWENSBORO, PADUCAH, PETERSBURG,
POSEYVILLE, PRINCETON, ROCKPORT, SHAWNEETOWN, SMITHLAND, VIENNA,
WEST FRANKFORT, WEST SALEM, AND WICKLIFFE.
$$
Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service St Louis MO
248 PM CDT Tue Jul 21 2026
ILZ069-074-079-100>102-MOZ041-047>051-059>065-072>075-084-085-099-
220000-
/O.CON.KLSX.HT.Y.0004.000000T0000Z-260722T0000Z/
Clinton IL-Washington IL-Randolph IL-Madison IL-Saint Clair IL-
Monroe IL-Boone MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-
Montgomery MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO-
Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO-
Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO-
Madison MO-Reynolds MO-
Including the cities of Fulton, Alton, Columbia, Edwardsville,
Belleville, Saint Louis, Farmington, Cahokia, Sparta, Jefferson City,
Union, Sullivan, Chester, Washington, and Saint Charles
248 PM CDT Tue Jul 21 2026
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...
* WHAT...Heat index values up to 107.
* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.
* WHEN...Until 7 PM CDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors. Young children and
pets should never be left unattended in vehicles under any
circumstances. Take extra precautions if you work or spend time
outside. When possible reschedule strenuous activities to early
morning or evening. Know the signs and symptoms of heat exhaustion
and heat stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational Safety
and Health Administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
&&
$$
Carney
URGENT - WEATHER MESSAGE
National Weather Service Paducah KY
1111 AM CDT Tue Jul 21 2026
ILZ076>078-INZ081-082-220000-
/O.CON.KPAH.HT.Y.0004.000000T0000Z-260722T0000Z/
Wayne IL-Edwards-Wabash-Gibson-Pike-
Including the cities of Fairfield, Fort Branch, Albion, Mount Carmel,
and Petersburg
1111 AM CDT Tue Jul 21 2026 /1211 PM EDT Tue Jul 21 2026/
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT /8 PM EDT/ THIS
EVENING...
* WHAT...Heat index values of 105 to 109 expected.
* WHERE...In Illinois, Edwards, Wabash, and Wayne IL Counties. In
Indiana, Gibson and Pike Counties.
* WHEN...Until 7 PM CDT /8 PM EDT/ this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
DW
URGENT - WEATHER MESSAGE
National Weather Service Louisville KY
1039 AM EDT Tue Jul 21 2026
INZ083-089-KYZ023-024-026-027-061>063-070>076-081-220000-
/O.CON.KLMK.HT.Y.0004.260721T1500Z-260722T0000Z/
Dubois-Perry-Hancock-Breckinridge-Ohio-Grayson-Butler-Edmonson-Hart-
Logan-Warren-Simpson-Allen-Barren-Monroe-Metcalfe-Cumberland-
Including the cities of Providence, Tompkinsville, Scottsville,
Morgantown, Russellville, Leitchfield, Brownsville, Glasgow, Jasper,
Hartford, Hawesville, Burkesville, Franklin, Lewisport, Hardinsburg,
Bowling Green, Tell City, Edmonton, and Horse Cave
1039 AM EDT Tue Jul 21 2026 /939 AM CDT Tue Jul 21 2026/
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT /7 PM CDT/ THIS
EVENING...
* WHAT...Heat index values of 105 to 110 expected.
* WHERE...Portions of Indiana and north central, northwest, and south
central Kentucky.
* WHEN...Until 8 PM EDT /7 PM CDT/ this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
CAL
Beach Hazards Statement
Coastal Hazard Message
National Weather Service Chicago IL
426 PM CDT Tue Jul 21 2026
INZ001-002-220530-
/O.CON.KLOT.BH.S.0008.260721T2300Z-260723T1200Z/
Lake IN-Porter-
426 PM CDT Tue Jul 21 2026
...BEACH HAZARDS STATEMENT REMAINS IN EFFECT THROUGH THURSDAY
MORNING...
* WHAT...High wave action and dangerous currents expected at Lake
Michigan beaches. Waves 6 to 9 ft expected.
* WHERE...Lake IN and Porter Counties.
* WHEN...Through Thursday morning.
* IMPACTS...Swimming conditions will be life threatening,
especially for inexperienced swimmers.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain out of the water to avoid dangerous swimming conditions
and do not venture out onto piers, jetties, breakwalls, or other
shoreline structures.
&&
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
221 PM CDT Tue Jul 21 2026
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-221930-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
221 PM CDT Tue Jul 21 2026 /321 PM EDT Tue Jul 21 2026/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
High Swim Risk Lake Michigan Beaches.
DISCUSSION...
Waves will build on Lake Michigan this evening leading to a High
Swim Risk.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Wednesday...
High Swim Risk Lake Michigan Beaches.
Saturday night...
Limited Thunderstorm Risk.
Sunday and Monday...
Limited Thunderstorm Risk.
Limited Excessive Heat Risk.
DISCUSSION...
A High Swim Risk will continue through early Thursday morning.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be necessary through tonight.
$$
Hazardous Weather Outlook
National Weather Service Paducah KY
1240 PM CDT Tue Jul 21 2026
ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-221745-
Jefferson-Wayne IL-Edwards-Wabash-Perry IL-Franklin-Hamilton-
White-Jackson-Williamson-Saline-Gallatin-Union-Johnson-Pope-
Hardin-Alexander-Pulaski-Massac-Gibson-Pike-Posey-Vanderburgh-
Warrick-Spencer-Fulton-Hickman-Carlisle-Ballard-McCracken-Graves-
Livingston-Marshall-Calloway-Crittenden-Lyon-Trigg-Caldwell-
Union KY-Webster-Hopkins-Christian-Henderson-Daviess-McLean-
Muhlenberg-Todd-Perry MO-Bollinger-Cape Girardeau-Wayne MO-Carter-
Ripley-Butler-Stoddard-Scott-Mississippi-New Madrid-
1240 PM CDT Tue Jul 21 2026 /140 PM EDT Tue Jul 21 2026/
This Hazardous Weather Outlook is for portions of southern
Illinois, southwest Indiana, western Kentucky, and southeast
Missouri.
.DAY ONE...This Afternoon and Tonight
A Heat Advisory and Extreme Heat Warning is in effect through
this evening for most of the Quad State area. Refer to the
statement for more details.
Severe thunderstorms are possible today. The main threats will be
damaging winds, lightning and localized flash flooding. Isolated
large hail and a brief tornado is also possible.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday
Heat index values may exceed 105 degrees on Sunday and Monday.
.SPOTTER INFORMATION STATEMENT...
Spotters are encouraged to report any severe weather to the
National Weather Service.
$$
DW
