869
WWUS45 KRIW 080814
WSWRIW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
114 AM MST SUN FEB 8 2026
WYZ001-090000-
/O.NEW.KRIW.WW.Y.0005.260209T0000Z-260210T0000Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF OLD FAITHFUL, MAMMOTH, AND LAKE
114 AM MST SUN FEB 8 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 5
PM MST MONDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS OF 7 TO 12 INCHES
ACROSS MUCH OF YELLOWSTONE NATIONAL PARK, INCLUDING THE SOUTH AND
EAST PARK ENTRANCES. ISOLATED HIGHER AMOUNTS UP TO 15 INCHES ARE
POSSIBLE OVER THE HIGHEST TERRAIN. ACCUMULATIONS OF 1 TO 5 INCHES
NEAR MAMMOTH. GUSTY 25 TO 35 MPH WINDS ARE EXPECTED.
* WHERE...YELLOWSTONE NATIONAL PARK.
* WHEN...FROM 5 PM THIS AFTERNOON TO 5 PM MST MONDAY.
* IMPACTS...TRAVEL COULD BE DIFFICULT.
* ADDITIONAL DETAILS...THE PERIOD OF HEAVIEST SNOWFALL IS FORECAST
TO OCCUR BETWEEN 11PM SUNDAY AND 11AM MONDAY WITH SNOW RATES UP 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 .
WYZ012-090000-
/O.NEW.KRIW.WW.Y.0005.260209T0000Z-260210T0000Z/
TETON AND GROS VENTRE MOUNTAINS-
114 AM MST SUN FEB 8 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 5
PM MST MONDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS OF 6 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 40 MPH.
* WHERE...TETON AND GROS VENTRE MOUNTAINS.
* WHEN...FROM 5 PM THIS AFTERNOON TO 5 PM MST MONDAY.
* 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 BETWEEN 11PM SUNDAY AND 11AM 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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