462
WWUS45 KRIW 090818
WSWRIW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
118 AM MST MON FEB 9 2026
WYZ002-100000-
/O.EXB.KRIW.WW.Y.0005.260209T0900Z-260210T0000Z/
ABSAROKA MOUNTAINS-
118 AM MST MON FEB 9 2026
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST THIS AFTERNOON
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS OF 6 TO 11 INCHES.
THE HIGHEST ELEVATIONS OF THE SOUTHWEST ABSAROKA MOUNTAINS COULD
SEE TOTALS UP TO 15 INCHES. WIND GUSTS OF 30 TO 45 MPH WITH
OCCASIONAL GUSTS AS HIGH AS 50 MPH.
* WHERE...ABSAROKA MOUNTAINS.
* WHEN...UNTIL 5 PM MST THIS AFTERNOON.
* IMPACTS...TRAVEL COULD BE DIFFICULT.
* ADDITIONAL DETAILS...SNOW ACCUMULATIONS OF 6 INCHES OR GREATER
WILL LIKELY BE CONFINED TO ELEVATIONS ABOVE 8,500 FT ASL. SNOW
ACCUMULATIONS OF 0.5 TO 4 INCHES FOR ELEVATIONS BELOW 8,500 FT
ASL. THE PERIOD OF HEAVIEST SNOWFALL IS FORECAST TO OCCUR THROUGH
11 AM MONDAY WITH SNOW RATES UP TO 1 INCH PER HOUR POSSIBLE ACROSS
HIGHER TERRAIN.
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 .
WYZ001-100000-
/O.CON.KRIW.WW.Y.0005.000000T0000Z-260210T0000Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF LAKE, MAMMOTH, AND OLD FAITHFUL
118 AM MST MON FEB 9 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS OF 6 TO 11 INCHES
SOUTH AND EAST OF THE LOWER LOOP OF YELLOWSTONE NATIONAL PARK.
ISOLATED HIGHER AMOUNTS UP TO 16 INCHES ARE POSSIBLE OVER THE
HIGHEST TERRAIN. TOTAL ACCUMULATIONS OF 3 TO 7 INCHES ALONG THE
UPPER LOOP AND NORTHERN PORTIONS OF THE LOWER LOOP. ACCUMULATIONS
OF 1 TO 3 INCHES NEAR MAMMOTH. GUSTY 20 TO 35 MPH WINDS ARE
EXPECTED.
* WHERE...YELLOWSTONE NATIONAL PARK.
* WHEN...UNTIL 5 PM MST THIS AFTERNOON.
* IMPACTS...TRAVEL COULD BE DIFFICULT.
* ADDITIONAL DETAILS...THE PERIOD OF HEAVIEST SNOWFALL IS FORECAST
TO OCCUR THROUGH 11 AM MONDAY WITH SNOW RATES UP TO 1 INCH PER
HOUR POSSIBLE, ESPECIALLY OVER HIGHER TERRAIN.
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 .
WYZ012-100000-
/O.CON.KRIW.WW.Y.0005.000000T0000Z-260210T0000Z/
TETON AND GROS VENTRE MOUNTAINS-
118 AM MST MON FEB 9 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS OF 5 TO 12 INCHES,
INCLUDING OVER TOGWOTEE AND TETON PASSES. LOCALLY HIGHER AMOUNTS
UP TO 18 INCHES ARE POSSIBLE ACROSS THE HIGHEST TERRAIN OF THE
TETONS. WIDESPREAD WIND GUSTS OF 20 TO 35 MPH WITH THE HIGHER
TERRAIN OF THE TETONS SEEING GUSTS UP TO 50 MPH.
* WHERE...TETON AND GROS VENTRE MOUNTAINS.
* WHEN...UNTIL 5 PM MST THIS AFTERNOON.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT. THE HAZARDOUS CONDITIONS
COULD IMPACT THE MONDAY MORNING AND EVENING COMMUTES.
* ADDITIONAL DETAILS...THE PERIOD OF HEAVIEST SNOWFALL IS FORECAST
TO OCCUR THROUGH 11 AM MONDAY WITH SNOW RATES OF 0.5 INCH PER HOUR
TO 1 INCH PER HOUR POSSIBLE.
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/ .
GERHARDT
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