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WWUS45 KRIW 201140
WSWRIW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
440 AM MST SAT DEC 20 2025
WYZ001-002-012-014-015-024-201245-
/O.EXP.KRIW.WS.W.0015.000000T0000Z-251220T1200Z/
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-TETON AND GROS
VENTRE MOUNTAINS-WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS
EAST-SALT RIVER AND WYOMING RANGES-
INCLUDING THE CITIES OF MAMMOTH, LAKE, AND OLD FAITHFUL
440 AM MST SAT DEC 20 2025
..WINTER STORM WARNING WILL EXPIRE AT 5 AM MST EARLY THIS MORNING
LIGHT SNOW WILL CONTINUE THROUGH THE REST OF THE MORNING, WITH
LITTLE ADDITIONAL ACCUMULATION. THUS, THE THREAT HAS ENDED.
WYZ013-023-025-201245-
/O.EXP.KRIW.WW.Y.0038.000000T0000Z-251220T1200Z/
JACKSON HOLE-STAR VALLEY-UPPER GREEN RIVER BASIN FOOTHILLS-
INCLUDING THE CITIES OF AFTON, JACKSON, THAYNE, ALPINE, PINEDALE,
AND STAR VALLEY RANCH
440 AM MST SAT DEC 20 2025
...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 AM MST EARLY THIS
MORNING...
SNOW HAS ENDED THIS MORNING AND THE THREAT HAS ENDED.
FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE, VISIT
HTTPS://WEATHER.GOV/RIW/ .
TL
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