904
WWUS45 KRIW 220713
WSWRIW
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE RIVERTON WY
113 AM MDT WED APR 22 2026
WYZ002-230000-
/O.EXA.KRIW.WW.Y.0016.260422T1800Z-260424T0500Z/
ABSAROKA MOUNTAINS-
113 AM MDT WED APR 22 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 11 PM MDT
THURSDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 6 AND 12
INCHES FOR ELEVATIONS 9,000 FEET AND ABOVE. WINDS GUSTING BETWEEN
50 AND 70 MPH, ESPECIALLY ACROSS THE EASTERN PORTIONS OF THE
ABSAROKA MOUNTAINS.
* WHERE...ABSAROKA MOUNTAINS.
* WHEN...FROM NOON TODAY TO 11 PM MDT THURSDAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT, ESPECIALLY IN THE
BACKCOUNTRY.
* ADDITIONAL DETAILS...TOTAL SNOW ACCUMULATIONS OF 1 TO 4 INCHES
ALONG US 14/60/20 WEST OF CODY AND ACROSS CHIEF JOSEPH 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 .
WYZ001-230000-
/O.CON.KRIW.WW.Y.0016.260422T1800Z-260424T0500Z/
YELLOWSTONE NATIONAL PARK-
INCLUDING THE CITIES OF OLD FAITHFUL, LAKE, AND MAMMOTH
113 AM MDT WED APR 22 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 11
PM MDT THURSDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 5 AND 12
INCHES, WITH THE ACCUMULATIONS UP TO 18 INCHES ACROSS THE
PITCHSTONE PLATEAU IN SOUTHWEST YELLOWSTONE. WINDS GUSTING BETWEEN
30 AND 45 MPH.
* WHERE...YELLOWSTONE NATIONAL PARK.
* WHEN...FROM NOON TODAY TO 11 PM MDT THURSDAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT.
* ADDITIONAL DETAILS...TOTAL SNOW ACCUMULATION OF 1 TO 3 INCHES AT
MAMMOTH AND 6 TO 9 INCHES AROUND OLD FAITHFUL AND CANYON.
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 .
WYZ012-230000-
/O.CON.KRIW.WW.Y.0016.260422T1800Z-260424T0500Z/
TETON AND GROS VENTRE MOUNTAINS-
113 AM MDT WED APR 22 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 11
PM MDT THURSDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 6 AND 12
INCHES FOR ELEVATIONS ABOVE 7,500 FEET. TOTAL ACCUMULATIONS AROUND
20 INCHES ARE POSSIBLE FOR THE HIGHEST ELEVATIONS OF THE TETON
MOUNTAINS. WINDS GUSTING BETWEEN 30 AND 40 MPH, WITH GUSTS AROUND
50 MPH ACROSS THE HIGHEST ELEVATIONS.
* WHERE...TETON AND GROS VENTRE MOUNTAINS.
* WHEN...FROM NOON TODAY TO 11 PM MDT THURSDAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT, INCLUDING OVER TETON
PASS AND TOGWOTEE PASS.
* ADDITIONAL DETAILS...TOTAL SNOW ACCUMULATIONS OF 1 TO 3 INCHES ARE
POSSIBLE FOR ELEVATIONS BELOW 7,500 FEET.
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 .
WYZ024-230000-
/O.CON.KRIW.WW.Y.0016.260422T1800Z-260424T0500Z/
SALT RIVER AND WYOMING RANGES-
113 AM MDT WED APR 22 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 11
PM MDT THURSDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS OF 5 TO 10 INCHES,
WITH THE HIGHEST PEAKS SEEING ACCUMULATIONS AROUND 15 INCHES.
WINDS GUSTING BETWEEN 35 AND 50 MPH.
* WHERE...SALT RIVER AND WYOMING RANGES.
* WHEN...FROM NOON TODAY TO 11 PM MDT THURSDAY.
* IMPACTS...TRAVEL COULD BE DIFFICULT, INCLUDING OVER SALT RIVER
PASS.
* ADDITIONAL DETAILS...TOTAL SNOW ACCUMULATIONS OF 1 TO 3 INCHES
ACROSS SALT RIVER 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/ .
GERHARDT
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