WWUS45 KRIW 050504

WSWRIW



URGENT - WINTER WEATHER MESSAGE

National Weather Service Riverton WY

1104 PM MDT Mon May 4 2026



WYZ009-015-052200-

/O.CON.KRIW.WW.Y.0018.260505T0700Z-260506T0700Z/

Bighorn Mountains Southeast-Wind River Mountains East-

1104 PM MDT Mon May 4 2026



...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 AM MDT 

WEDNESDAY...



* WHAT...Snow. Total snow accumulations between 8 and 12 inches for 

  South Pass and Powder River Pass. Total snow accumulations for 

  central portions of the Wind River Mountains of 12 to 18 inches. 

  Winds gusting as high as 30 to 40 mph.



* WHERE...Wind River Mountains East and Bighorn Mountains Southeast.



* WHEN...Until 1 AM MDT Wednesday.



* IMPACTS...Travel could be difficult, especially Tuesday afternoon. 

  The hazardous conditions could impact the Tuesday morning and 

  evening commutes over South Pass and Powder River Pass. Falling 

  snow combined with wind gusts around 30 to 40 mph will lead to 

  reductions in visibility.



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/ .



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