010
WWUS45 KRIW 261026
WSWRIW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
326 AM MST FRI DEC 26 2025
WYZ001-270000-
/O.CON.KRIW.WW.Y.0040.251226T1200Z-251227T0600Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF LAKE, MAMMOTH, AND OLD FAITHFUL
326 AM MST FRI DEC 26 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 2 AND 6
INCHES ACROSS THE LOWER ELEVATIONS, AND TOTALS 6 TO 10 INCHES
ACROSS THE HIGHER ELEVATIONS. WINDS GUSTING AS HIGH AS 45 MPH.
* WHERE...YELLOWSTONE NATIONAL PARK.
* WHEN...UNTIL 11 PM MST THIS EVENING.
* IMPACTS...TRAVEL WILL BE DIFFICULT IN THE BACKCOUNTRY.
* ADDITIONAL DETAILS...LOCALLY HIGHER AMOUNTS 12 TO 20 INCHES OVER
THE MADISON AND PITCHSTONE PLATEAUS OF SOUTHWEST YELLOWSTONE. SNOW
TOTALS OF HALF AN INCH TO 3 INCHES AROUND MAMMOTH.
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 .
WYZ002-012-014-024-270000-
/O.CON.KRIW.WW.Y.0040.251226T1200Z-251227T0600Z/
ABSAROKA MOUNTAINS-TETON AND GROS VENTRE MOUNTAINS-WIND RIVER
MOUNTAINS WEST-SALT RIVER AND WYOMING RANGES-
326 AM MST FRI DEC 26 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS
EVENING...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 6 AND 10
INCHES, WITH ISOLATED AMOUNTS 10 TO 15 INCHES AT THE HIGHEST
ELEVATIONS. WINDS GUSTING AS HIGH AS 45 MPH.
* WHERE...WIND RIVER MOUNTAINS WEST, ABSAROKA MOUNTAINS, TETON AND
GROS VENTRE MOUNTAINS, AND SALT RIVER AND WYOMING RANGES.
* WHEN...UNTIL 11 PM MST THIS EVENING.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT, ESPECIALLY ACROSS
MOUNTAIN PASSES.
* ADDITIONAL DETAILS...SNOW TOTALS UP TO 6 INCHES ON SOUTH PASS, 5
TO 10 INCHES ON TOGWOTEE PASS, AND 5 TO 10 INCHES ON TETON PASS.
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/ .
HATTINGS
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