Flood Advisory

Flood Advisory
National Weather Service Riverton WY
1152 AM MDT Sat May 31 2025

WYC043-021800-
/O.NEW.KRIW.FA.Y.0002.250531T1752Z-250602T1800Z/
/00000.N.SM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washakie WY-
1152 AM MDT Sat May 31 2025

...FLOOD ADVISORY FOR SNOWMELT IN EFFECT UNTIL NOON MDT MONDAY...

* WHAT...Minor Flooding caused by snowmelt is expected.

* WHERE...Along Tensleep Creek and Canyon Creek in northeastern
  Washakie County near and above the town of Tensleep.

* WHEN...Until noon MDT Monday.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.
  Some low-water crossings may become impassable. River or stream
  flows are elevated.

* ADDITIONAL DETAILS...
  - At 1136 AM MDT, gauge reports indicate river rises to near or
    above bankfull conditions earlier this morning due to warm
    temperatures and increased high-elevation snowmelt.
  - Creek levels continue to decrease through the afternoon and
    evening, but are expected to increase overnight, and exceed
    bankfull conditions again by early Sunday morning. A similar
    diurnal pattern is expected to occur Sunday into Monday.
  - Some locations that may experience flooding include...
    Ten Sleep, Tensleep Canyon, Leigh Creek Campground and Wigwam
    Fish Rearing Station.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Minor flooding is occurring or is imminent. It is important to know
where you are relative to streams, rivers, or creeks. Campers and
hikers should avoid streams or creeks.

Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.

&&

LAT...LON 4407 10731 4406 10735 4402 10731 4401 10734
      4404 10737 4404 10740 4402 10744 4403 10746
      4407 10739 4409 10732


$$

Hensley

Flood Watch

Flood Watch
National Weather Service Denver CO
154 PM MDT Sat May 31 2025

...Flood Watch continues for the following river...

  Colorado River above Grand Lake affecting Grand County.

.Heavy rain Monday afternoon into Tuesday morning may fall on a
primed snowpack leading to additional runoff. Flows in rivers may
increase quickly and produce minor flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you are in the watch area, remain alert to possible flooding.

Additional information is available at www.weather.gov.

&&

COZ032-033-020000-
/O.CON.KBOU.FL.A.0001.250602T2000Z-250604T0000Z/
/BAKC2.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.UU/
154 PM MDT Sat May 31 2025

...FLOOD WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON TO TUESDAY
EVENING...

* WHAT...Flooding is possible.

* WHERE...Colorado River above Grand Lake.

* WHEN...From Monday afternoon to Tuesday evening.

* IMPACTS...At 8.0 feet, Considerable lowland flooding occurs with
  trails and foot bridges along and crossing the river flooded.

* ADDITIONAL DETAILS...
  - At 1:15 PM MDT Saturday the stage was 6.6 feet.
  - Forecast...Flood stage may be reached Monday evening.
  - Flood stage is 8.0 feet.


&&

LAT...LON 4040 10587 4030 10587 4029 10586 4027 10587
      4022 10588 4022 10586 4023 10585 4026 10585
      4026 10584 4033 10585 4040 10584

$$

Ideker

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
933 AM MDT Sat May 31 2025

COZ030>051-011545-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
933 AM MDT Sat May 31 2025

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

A few showers and thunderstorms will be possible this afternoon
across the higher elevations. Lightning and wind gusts up to 40
mph will be the main threat, but brief heavy rain and small hail
are also possible.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Scattered afternoon and evening showers and thunderstorms are
expected over the mountains again on Sunday, with just a slight
chance of storms on the plains. The threat of severe weather will
remain low. High temperatures will reach the mid to upper 80s
across most of the plains.

A weather system is expected to bring rain late Monday
into Tuesday, with snow limited to areas above 10 thousand feet.
The rain combined with snowmelt will cause elevated levels on
mountain streams. Cooler weather with scattered showers is
expected for Wednesday and Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

$$

Gimmestad

Hazardous Weather Outlook
National Weather Service Grand Junction CO
349 AM MDT Sat May 31 2025

COZ001>014-017>023-UTZ022>025-027>029-011000-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
349 AM MDT Sat May 31 2025

This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.

.DAY ONE...Today and tonight.

Isolated afternoon showers and thunderstorms will develop over the
higher terrain today, mostly along the Divide. The primary threats
from these storms will be lightning, and gusty outflow winds 40 to 50
mph. Showers quickly diminish early this evening with quiet
conditions returning overnight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Isolated afternoon showers and thunderstorms continue Sunday over
the higher terrain along the Divide. Gusty winds, lightning, and
small hail can be expected with these storms. Remnants of Tropical
Storm Alvin moves up into the region Monday through midweek bringing
widespread showers, scattered thunderstorms and a possible threat of
localized flash flooding in areas prone to heavy runoff.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

Hazardous Weather Outlook
National Weather Service Riverton WY
220 AM MDT Sat May 31 2025

WYZ001>020-022>030-011300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
220 AM MDT Sat May 31 2025

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight.

Warm temperatures will bring high elevation snowmelt and rising
water levels on area creek and streams.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday...Above normal temperatures allow for mountain snowmelt
and rising water levels on creeks and streams.

Strong thunderstorms possible in northwestern Wyoming Sunday
afternoon.

Monday and Tuesday...A transition to a cooler and wetter pattern,
with snow possible in the higher elevations. Details on
precipitation amounts remain uncertain.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

$$

Hydrologic Outlook

Hydrologic Outlook
WYC003-013-017-019-023-025-029-035-037-039-043-012200-

Hydrologic Outlook
National Weather Service Riverton WY
1159 AM MDT Sat May 31 2025

...Warm Temperatures this Weekend will increase high-elevation
snowmelt and flooding potential...

Temperatures are expected to reach the mid to upper 80s this
weekend. Sunday will be the warmest day, with highs in the upper 80s
to low 90s across many locations. Low temperatures will also remain
well above freezing with low temperatures in the 40s at elevations
above 9500 feet. These warm temperatures will continue to lead to an
increase in the rate of mountain snowmelt.

Most mountain snowpack below 9500 feet has melted out, however,
high-elevation mountain snow water equivalent (SWE) above that level
still remains. With the expected warm temperatures, a significant
portion of that high-elevation snowpack is expected to continue to
melt through Sunday night. Minor flooding of small streams and
creeks fed by mountain snowmelt is thus possible through Monday.
Highest stream flows and crests are expected to occur Sunday morning
and Monday morning.

Stay tuned for the latest river forecasts. Remember, if you
encounter a flooded roadway, turn around don`t drown. You never know
what road conditions are hidden under the water.

$$

Hensley