630
WWUS45 KRIW 171134
WSWRIW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
534 AM MDT FRI APR 17 2026
WYZ014-015-171245-
/O.CAN.KRIW.WS.W.0004.000000T0000Z-260418T0000Z/
WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST-
534 AM MDT FRI APR 17 2026
..WINTER STORM WARNING IS CANCELLED
STEADY SNOW HAS ENDED AND ANY SNOW SHOWERS TODAY SHOULD LEAVE ONLY
LIGHT ACCUMULATIONS.
WYZ001-002-012-171245-
/O.EXP.KRIW.WS.W.0004.000000T0000Z-260417T1200Z/
YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-TETON AND GROS
VENTRE MOUNTAINS-
INCLUDING THE CITIES OF OLD FAITHFUL, MAMMOTH, AND LAKE
534 AM MDT FRI APR 17 2026
..WINTER STORM WARNING WILL EXPIRE AT 6 AM MDT EARLY THIS MORNING
ANY SNOW SHOWERS TODAY WILL ONLY LEAVE LIGHT ACCUMULATIONS.
WYZ008>011-171245-
/O.EXP.KRIW.WW.Y.0015.000000T0000Z-260417T1200Z/
BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST-NORTHEAST
JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY-
INCLUDING THE CITIES OF BUFFALO AND KAYCEE
534 AM MDT FRI APR 17 2026
...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 AM MDT EARLY THIS
MORNING...
ANY SNOW SHOWERS TODAY WILL ONLY LEAVE LIGHT ACCUMULATIONS.
WYZ019-022-171800-
/O.CON.KRIW.WW.Y.0015.000000T0000Z-260417T1800Z/
GREEN MOUNTAINS AND RATTLESNAKE RANGE-CASPER MOUNTAIN-
INCLUDING THE CITIES OF JEFFREY CITY
534 AM MDT FRI APR 17 2026
..WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO TWO INCHES.
* WHERE...CASPER MOUNTAIN AND GREEN MOUNTAINS AND RATTLESNAKE RANGE.
* WHEN...UNTIL NOON MDT TODAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS
CONDITIONS COULD IMPACT THE FRIDAY MORNING COMMUTE.
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 .
WYZ020-171800-
/O.CON.KRIW.WW.Y.0015.000000T0000Z-260417T1800Z/
NATRONA COUNTY LOWER ELEVATIONS-
INCLUDING THE CITIES OF CASPER
534 AM MDT FRI APR 17 2026
..WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO AN INCH.
* WHERE...NATRONA COUNTY LOWER ELEVATIONS.
* WHEN...UNTIL NOON MDT TODAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS
CONDITIONS COULD IMPACT THE FRIDAY MORNING COMMUTE.
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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