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WWUS45 KRIW 221842
WSWRIW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
1142 AM MST SUN FEB 22 2026
WYZ001-231400-
/O.NEW.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF LAKE, MAMMOTH, AND OLD FAITHFUL
1142 AM MST SUN FEB 22 2026
...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH
WEDNESDAY MORNING...
* WHAT...HEAVY SNOW POSSIBLE. TOTAL SNOW ACCUMULATIONS 12 TO 18
INCHES OVER THE PITCHSTONE PLATEAU OF SOUTHWEST YELLOWSTONE
NATIONAL PARK, 6 TO 12 INCHES IN CENTRAL PORTIONS OF YELLOWSTONE,
AND BETWEEN 1 AND 4 INCHES IN LAMAR VALLEY AND MAMMOTH. WEST WIND
15 TO 30 MPH.
* WHERE...YELLOWSTONE NATIONAL PARK.
* WHEN...FROM LATE MONDAY NIGHT THROUGH WEDNESDAY MORNING.
* IMPACTS...BACKCOUNTRY TRAVEL COULD BE VERY DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
WYZ002-231400-
/O.NEW.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/
ABSAROKA MOUNTAINS-
1142 AM MST SUN FEB 22 2026
...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH
WEDNESDAY MORNING...
* WHAT...HEAVY SNOW POSSIBLE. TOTAL SNOW ACCUMULATIONS 12 TO 16
INCHES OVER THE WESTERN HALF OF THE ABSAROKA RANGE, WITH 4 TO 10
INCHES OVER THE EASTERN HALF. WEST WIND FREQUENTLY GUSTING 35 TO
45 MPH.
* WHERE...ABSAROKA MOUNTAINS.
* WHEN...FROM LATE MONDAY NIGHT THROUGH WEDNESDAY MORNING.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT.
* ADDITIONAL DETAILS...A HIGH WIND WATCH IS ALSO IN EFFECT FOR THE
ABSAROKA MOUNTAINS DUE TO STRONGER WIND SPEEDS EXPECTED IN AREAS
WHERE SNOWFALL WILL BE MUCH LESS HEAVY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
WYZ012-024-231400-
/O.NEW.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/
TETON AND GROS VENTRE MOUNTAINS-SALT RIVER AND WYOMING RANGES-
1142 AM MST SUN FEB 22 2026
...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH
WEDNESDAY MORNING...
* WHAT...HEAVY SNOW POSSIBLE. TOTAL SNOW ACCUMULATIONS 12 TO 18
INCHES. ACCUMULATIONS OF 18 TO 24 INCHES POSSIBLE IN THE TETON
RANGE. WEST WIND FREQUENTLY GUSTING 25 TO 35 MPH, EXCEPT GUSTS UP
TO 45 MPH IN THE TETON RANGE.
* WHERE...TETON AND GROS VENTRE MOUNTAINS AND SALT RIVER AND WYOMING
RANGES.
* WHEN...FROM LATE MONDAY NIGHT THROUGH WEDNESDAY MORNING.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT. THE HAZARDOUS CONDITIONS
COULD IMPACT THE TUESDAY EVENING AND WEDNESDAY MORNING COMMUTES.
* ADDITIONAL DETAILS...SNOWFALL TOTALS TOWARD THE SOUTHERN HALF OF
THE SALT RIVER RANGE WILL RANGE FROM 4 TO 10 INCHES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE, VISIT
HTTPS://WEATHER.GOV/RIW/ .
CNJ
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