727
WWUS45 KRIW 240855
WSWRIW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
155 AM MST TUE FEB 24 2026
WYZ001-242300-
/O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF LAKE, OLD FAITHFUL, AND MAMMOTH
155 AM MST TUE FEB 24 2026
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS
MORNING TO 5 PM MST WEDNESDAY...
* WHAT...HEAVY SNOW. TOTAL SNOW ACCUMULATIONS 12 TO 20 INCHES OVER
THE PITCHSTONE PLATEAU OF SOUTHWEST YELLOWSTONE NATIONAL PARK.
LOCALLY HIGHER AMOUNTS OVER 2 FEET WILL BE POSSIBLE. 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 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY.
* IMPACTS...BACKCOUNTRY TRAVEL WILL BE VERY DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY.
FOR GRAPHICAL DEPICTIONS OF THE SNOWFALL FORECAST, INCLUDING THE
OFFICIAL NWS FORECAST, HIGH END AMOUNTS, AND LOW END AMOUNTS, VISIT
HTTPS://WEATHER.GOV/RIW/WINTER.
FOR WINTER ROAD CONDITIONS FROM THE WYOMING DEPARTMENT OF
TRANSPORTATION, VISIT HTTPS://WYOROAD.INFO.
WYZ002-242300-
/O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/
ABSAROKA MOUNTAINS-
155 AM MST TUE FEB 24 2026
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS
MORNING TO 5 PM MST WEDNESDAY...
* WHAT...HEAVY SNOW POSSIBLE. TOTAL SNOW ACCUMULATIONS 15 TO 25
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. WEST WINDS GUSTING 60 TO 70 MPH WILL OCCUR WEDNESDAY, WITH
THE STRONGER GUSTS OCCURRING ON THE EAST SIDE OF THE RANGE.
* WHERE...ABSAROKA MOUNTAINS.
* WHEN...FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY.
* IMPACTS...TRAVEL WILL BE VERY DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY.
FOR GRAPHICAL DEPICTIONS OF THE SNOWFALL FORECAST, INCLUDING THE
OFFICIAL NWS FORECAST, HIGH END AMOUNTS, AND LOW END AMOUNTS, VISIT
HTTPS://WEATHER.GOV/RIW/WINTER .
FOR WINTER ROAD CONDITIONS FROM THE WYOMING DEPARTMENT OF
TRANSPORTATION, VISIT HTTPS://WYOROAD.INFO .
WYZ012-024-242300-
/O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/
TETON AND GROS VENTRE MOUNTAINS-SALT RIVER AND WYOMING RANGES-
155 AM MST TUE FEB 24 2026
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS
MORNING TO 5 PM MST WEDNESDAY...
* WHAT...HEAVY SNOW. TOTAL SNOW ACCUMULATIONS 18 TO 24 INCHES.
LOCALLY HIGHER AMOUNTS UP TO 3 FEET POSSIBLE IN THE TETONS. WEST
WIND FREQUENTLY GUSTING 25 TO 35 MPH TUESDAY, INCREASING TO 35 TO
45 MPH WEDNESDAY.
* WHERE...TETON AND GROS VENTRE MOUNTAINS AND SALT RIVER AND WYOMING
RANGES.
* WHEN...FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY.
* IMPACTS...SNOWFALL RATES UP TO 2"/HR WILL BE POSSIBLE TUESDAY
AFTERNOON.
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...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY.
FOR GRAPHICAL DEPICTIONS OF THE SNOWFALL FORECAST, INCLUDING THE
OFFICIAL NWS FORECAST, HIGH END AMOUNTS, AND LOW END AMOUNTS, VISIT
HTTPS://WEATHER.GOV/RIW/WINTER.
FOR WINTER ROAD CONDITIONS FROM THE WYOMING DEPARTMENT OF
TRANSPORTATION, VISIT HTTPS://WYOROAD.INFO.
WYZ014-242300-
/O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/
WIND RIVER MOUNTAINS WEST-
155 AM MST TUE FEB 24 2026
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS
MORNING TO 5 PM MST WEDNESDAY...
* WHAT...HEAVY SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 12
AND 18 INCHES OVER THE NORTHERN HALF OF THE RANGE. 1 TO 2 INCHES
POSSIBLE OVER SOUTH PASS TUESDAY NIGHT INTO WEDNESDAY MORNING.
WINDS GUSTING AS HIGH AS 50 MPH OVER SOUTH PASS TUESDAY,
INCREASING TO 60 MPH ON WEDNESDAY.
* WHERE...WIND RIVER MOUNTAINS WEST.
* WHEN...FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT OVER SOUTH PASS. THE
HAZARDOUS CONDITIONS COULD IMPACT THE TUESDAY EVENING AND
WEDNESDAY MORNING COMMUTES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY.
FOR GRAPHICAL DEPICTIONS OF THE SNOWFALL FORECAST, INCLUDING THE
OFFICIAL NWS FORECAST, HIGH END AMOUNTS, AND LOW END AMOUNTS, VISIT
HTTPS://WEATHER.GOV/RIW/WINTER.
FOR WINTER ROAD CONDITIONS FROM THE WYOMING DEPARTMENT OF
TRANSPORTATION, VISIT HTTPS://WYOROAD.INFO.
WYZ008-009-242300-
/O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/
BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST-
155 AM MST TUE FEB 24 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS
MORNING TO 5 PM MST WEDNESDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 8 AND 15
INCHES ACROSS THE NORTH HALF OF THE RANGE, FROM ABOUT POWDER RIVER
PASS AND NORTH. LOCALLY HIGHER AMOUNTS UP TO 18 INCHES POSSIBLE.
WINDS GUSTING AS HIGH AS 40 MPH TUESDAY AFTERNOON, WITH GUSTS UP
TO 60 MPH ON THE EAST SLOPES WEDNESDAY AFTERNOON.
* WHERE...BIGHORN MOUNTAINS SOUTHEAST AND BIGHORN MOUNTAINS WEST.
* WHEN...FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING.
FOR GRAPHICAL DEPICTIONS OF THE SNOWFALL FORECAST, INCLUDING THE
OFFICIAL NWS FORECAST, HIGH END AMOUNTS, AND LOW END AMOUNTS, VISIT
HTTPS://WEATHER.GOV/RIW/WINTER.
FOR WINTER ROAD CONDITIONS FROM THE WYOMING DEPARTMENT OF
TRANSPORTATION, VISIT HTTPS://WYOROAD.INFO.
WYZ013-242300-
/O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/
JACKSON HOLE-
INCLUDING THE CITIES OF JACKSON
155 AM MST TUE FEB 24 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS
MORNING TO 5 PM MST WEDNESDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 3 AND 8
INCHES. HIGHEST TOTALS ARE EXPECTED ACROSS THE NORTHERN VALLEY,
FROM MOOSE TO MORAN JUNCTION. WINDS GUSTING AS HIGH AS 30 MPH
TUESDAY, INCREASING TO 45 MPH WEDNESDAY.
* WHERE...JACKSON HOLE.
* WHEN...FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT. THE HAZARDOUS CONDITIONS
COULD IMPACT THE TUESDAY MORNING AND EVENING COMMUTES.
* ADDITIONAL DETAILS...PRECIPITATION WILL BEGIN AS SNOW TUESDAY
MORNING, BUT IS EXPECTED TO CHANGE OVER TO RAIN BY THE AFTERNOON
AND LAST THROUGH MUCH OF THE NIGHT TUESDAY NIGHT. RAIN WILL THEN
CHANGE BACK OVER TO SNOW BY WEDNESDAY AFTERNOON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING.
FOR GRAPHICAL DEPICTIONS OF THE SNOWFALL FORECAST, INCLUDING THE
OFFICIAL NWS FORECAST, HIGH END AMOUNTS, AND LOW END AMOUNTS, VISIT
HTTPS://WEATHER.GOV/RIW/WINTER.
FOR WINTER ROAD CONDITIONS FROM THE WYOMING DEPARTMENT OF
TRANSPORTATION, VISIT HTTPS://WYOROAD.INFO.
FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE, VISIT
HTTPS://WEATHER.GOV/RIW/ .
TL
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