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Winter Storm Watch 0006
Issued by the Riverton Forecast Office

Action Issued Starts Expiration
New 2026-05-16 03:59:04 2026-05-17 19:00:00 2026-05-18 19:00:00
New 2026-05-16 03:59:04 2026-05-17 19:00:00 2026-05-18 19:00:00
New 2026-05-16 03:59:04 2026-05-17 19:00:00 2026-05-18 19:00:00


Action: New
Issued At: 2026-05-16 03:59:04

225 
WWUS45 KRIW 160858
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
258 AM MDT Sat May 16 2026

WYZ015-170000-
/O.NEW.KRIW.WS.A.0006.260518T0000Z-260519T0000Z/
Wind River Mountains East-
258 AM MDT Sat May 16 2026

...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY 
AFTERNOON...

* WHAT...Heavy snow possible. Total snow accumulations between 8 and 
  16 inches possible. Winds could gust as high as 45 mph.

* WHERE...Wind River Mountains East.

* WHEN...From Sunday evening through Monday afternoon.

* IMPACTS...Travel could be very difficult. The hazardous conditions 
  could impact the Monday morning and evening commutes, including 
  over South Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

WYZ019-170000-
/O.NEW.KRIW.WS.A.0006.260518T0000Z-260519T0000Z/
Green Mountains and Rattlesnake Range-
Including the cities of Jeffrey City
258 AM MDT Sat May 16 2026

...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY 
AFTERNOON...

* WHAT...Heavy snow possible. Total snow accumulations between 5 and 
  10 inches possible. Winds could gust as high as 50 mph.

* WHERE...Green Mountains and Rattlesnake Range.

* WHEN...From Sunday evening through Monday afternoon.

* IMPACTS...Travel could be difficult. The hazardous conditions 
  could impact the Monday morning and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

WYZ022-170000-
/O.NEW.KRIW.WS.A.0006.260518T0000Z-260519T0000Z/
Casper Mountain-
258 AM MDT Sat May 16 2026

...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY 
AFTERNOON...

* WHAT...Heavy snow possible. Total snow accumulations between 7 and 
  14 inches possible. Winds could gust as high as 40 mph.

* WHERE...Casper Mountain.

* WHEN...From Sunday evening through Monday afternoon.

* IMPACTS...Travel could be difficult. The hazardous conditions 
  could impact the Monday morning and evening commutes.

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/ .

Hattings


Action: New
Issued At: 2026-05-16 03:59:04

225 
WWUS45 KRIW 160858
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
258 AM MDT Sat May 16 2026

WYZ015-170000-
/O.NEW.KRIW.WS.A.0006.260518T0000Z-260519T0000Z/
Wind River Mountains East-
258 AM MDT Sat May 16 2026

...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY 
AFTERNOON...

* WHAT...Heavy snow possible. Total snow accumulations between 8 and 
  16 inches possible. Winds could gust as high as 45 mph.

* WHERE...Wind River Mountains East.

* WHEN...From Sunday evening through Monday afternoon.

* IMPACTS...Travel could be very difficult. The hazardous conditions 
  could impact the Monday morning and evening commutes, including 
  over South Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

WYZ019-170000-
/O.NEW.KRIW.WS.A.0006.260518T0000Z-260519T0000Z/
Green Mountains and Rattlesnake Range-
Including the cities of Jeffrey City
258 AM MDT Sat May 16 2026

...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY 
AFTERNOON...

* WHAT...Heavy snow possible. Total snow accumulations between 5 and 
  10 inches possible. Winds could gust as high as 50 mph.

* WHERE...Green Mountains and Rattlesnake Range.

* WHEN...From Sunday evening through Monday afternoon.

* IMPACTS...Travel could be difficult. The hazardous conditions 
  could impact the Monday morning and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

WYZ022-170000-
/O.NEW.KRIW.WS.A.0006.260518T0000Z-260519T0000Z/
Casper Mountain-
258 AM MDT Sat May 16 2026

...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY 
AFTERNOON...

* WHAT...Heavy snow possible. Total snow accumulations between 7 and 
  14 inches possible. Winds could gust as high as 40 mph.

* WHERE...Casper Mountain.

* WHEN...From Sunday evening through Monday afternoon.

* IMPACTS...Travel could be difficult. The hazardous conditions 
  could impact the Monday morning and evening commutes.

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/ .

Hattings


Action: New
Issued At: 2026-05-16 03:59:04

225 
WWUS45 KRIW 160858
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
258 AM MDT Sat May 16 2026

WYZ015-170000-
/O.NEW.KRIW.WS.A.0006.260518T0000Z-260519T0000Z/
Wind River Mountains East-
258 AM MDT Sat May 16 2026

...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY 
AFTERNOON...

* WHAT...Heavy snow possible. Total snow accumulations between 8 and 
  16 inches possible. Winds could gust as high as 45 mph.

* WHERE...Wind River Mountains East.

* WHEN...From Sunday evening through Monday afternoon.

* IMPACTS...Travel could be very difficult. The hazardous conditions 
  could impact the Monday morning and evening commutes, including 
  over South Pass.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

WYZ019-170000-
/O.NEW.KRIW.WS.A.0006.260518T0000Z-260519T0000Z/
Green Mountains and Rattlesnake Range-
Including the cities of Jeffrey City
258 AM MDT Sat May 16 2026

...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY 
AFTERNOON...

* WHAT...Heavy snow possible. Total snow accumulations between 5 and 
  10 inches possible. Winds could gust as high as 50 mph.

* WHERE...Green Mountains and Rattlesnake Range.

* WHEN...From Sunday evening through Monday afternoon.

* IMPACTS...Travel could be difficult. The hazardous conditions 
  could impact the Monday morning and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

WYZ022-170000-
/O.NEW.KRIW.WS.A.0006.260518T0000Z-260519T0000Z/
Casper Mountain-
258 AM MDT Sat May 16 2026

...WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY 
AFTERNOON...

* WHAT...Heavy snow possible. Total snow accumulations between 7 and 
  14 inches possible. Winds could gust as high as 40 mph.

* WHERE...Casper Mountain.

* WHEN...From Sunday evening through Monday afternoon.

* IMPACTS...Travel could be difficult. The hazardous conditions 
  could impact the Monday morning and evening commutes.

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/ .

Hattings



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