122
WWUS45 KRIW 050715
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
115 AM MDT Tue May 5 2026

WYZ019-030-052230-
/O.EXB.KRIW.WW.Y.0018.260506T0000Z-260506T1300Z/
Green Mountains and Rattlesnake Range-East Sweetwater County-
Including the cities of Wamsutter and Jeffrey City
115 AM MDT Tue May 5 2026

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 7 AM
MDT WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 1 to 4 inches.
  Winds gusting as high as 30 to 35 mph.

* WHERE...Green Mountains and Rattlesnake Range and East Sweetwater
  County.

* WHEN...From 6 PM this evening to 7 AM MDT Wednesday.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the Tuesday evening and Wednesday morning
  commutes, especially along Highway 287 through Jeffrey City and
  along the I-80 corridor for eastern Sweetwater County.

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 .

&&

$$

WYZ009-015-052230-
/O.CON.KRIW.WW.Y.0018.000000T0000Z-260506T0700Z/
Bighorn Mountains Southeast-Wind River Mountains East-
115 AM MDT Tue May 5 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/ .

Lowe