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Winter Storm Watch 0009
Issued by the Riverton Forecast Office

Action Issued Starts Expiration
New 2025-12-03 13:48:51 2025-12-04 18:00:00 2025-12-06 15:00:00
Upgraded 2025-12-04 03:23:14 2025-12-04 18:00:00 2025-12-06 15:00:00


Action: New
Issued At: 2025-12-03 13:48:51

512 
WWUS45 KRIW 031948
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1248 PM MST Wed Dec 3 2025

WYZ012-024-041315-
/O.NEW.KRIW.WS.A.0009.251205T0000Z-251206T2100Z/
Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges-
1248 PM MST Wed Dec 3 2025

...WINTER STORM WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH 
SATURDAY AFTERNOON...

* WHAT...Heavy snow possible. Total snow accumulations of 10 to 16 
  inches across much of the area with the highest elevations seeing 
  2 to 3 feet of snow. Winds could gust as high as 40 mph.

* WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming 
  Ranges.

* WHEN...From Thursday afternoon through Saturday afternoon.

* IMPACTS...Travel could be very difficult over Teton and Togwotee 
  Passes. The hazardous conditions could impact the morning and 
  evening commutes Friday.

* ADDITIONAL DETAILS...A brief lull in snowfall rates may occur 
  during the day Friday with the heaviest snowfall likely to arrive 
  for Friday night through Saturday morning. Gusty winds of 20 to 30 
  mph look to accompany the heavy snowfall which may create reduced 
  visibility and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

For more information from the National Weather Service, visit 
https://weather.gov/riw/ .

Dziewaltowski


Action: Upgraded
Issued At: 2025-12-04 03:23:14

211 
WWUS45 KRIW 040922
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
222 AM MST Thu Dec 4 2025

WYZ012-024-050000-
/O.UPG.KRIW.WS.A.0009.251205T0000Z-251206T2100Z/
/O.NEW.KRIW.WS.W.0012.251205T0000Z-251206T2100Z/
Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges-
222 AM MST Thu Dec 4 2025

...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 2 PM 
MST SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 12 to 20 
  inches across much of the area with the highest elevations seeing 
  2 to 3 feet. Gusty winds of 25 to 40 mph will be common. High 
  elevations of the Salt River and Wyoming Ranges could gust above 
  45 mph.

* WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming 
  Ranges.

* WHEN...From 5 PM this afternoon to 2 PM MST Saturday.

* IMPACTS...Travel could be very difficult, especially over Teton, 
  Togwotee, and Salt River Passes. The hazardous conditions could 
  impact the Friday morning and evening commutes.

* ADDITIONAL DETAILS...A brief lull in snowfall rates may occur 
  during the day Friday with the heaviest snowfall likely to arrive 
  Friday night through Saturday morning. Gusty winds of 20 to 30 mph 
  look to accompany the heavy snowfall which may create reduced 
  visibility and drifting snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in 
your vehicle in case of an emergency.

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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