894
WWUS45 KRIW 311007
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
307 AM MST Fri Jan 31 2025

WYZ001-010000-
/O.CON.KRIW.WS.W.0003.250131T1800Z-250203T0600Z/
Yellowstone National Park-
Including the cities of Old Faithful, Lake, and Mammoth
307 AM MST Fri Jan 31 2025

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
11 PM MST SUNDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 8 and
  16 inches around Mammoth, with higher amounts in southern portions
  of the Park. Winds gusting as high as 50 mph.

* WHERE...Yellowstone National Park.

* WHEN...From 11 AM this morning to 11 PM MST Sunday.

* IMPACTS...Travel could be very difficult.

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 .

&&

$$

WYZ002-014-015-010000-
/O.CON.KRIW.WS.W.0003.250131T1800Z-250203T0600Z/
Absaroka Mountains-Wind River Mountains West-Wind River Mountains
East-
307 AM MST Fri Jan 31 2025

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
11 PM MST SUNDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 12
  and 24 inches. Winds gusting as high as 70 mph.

* WHERE...Wind River Mountains East, Wind River Mountains West, and
  Absaroka Mountains.

* WHEN...From 11 AM this morning to 11 PM MST Sunday.

* IMPACTS...Travel could be very difficult. Very strong winds will
  create hazardous conditions with blowing 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 .

&&

$$

WYZ012-024-010000-
/O.CON.KRIW.WS.W.0003.250131T1800Z-250203T0600Z/
Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges-
307 AM MST Fri Jan 31 2025

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
11 PM MST SUNDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 24
  and 48 inches through Monday morning.

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

* WHEN...From 11 AM this morning to 11 PM MST Sunday.

* IMPACTS...Travel could be very difficult. Strong winds will create
  widespread blowing 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 .

&&

$$

WYZ013-023-010000-
/O.CON.KRIW.WS.W.0003.250131T1800Z-250202T0600Z/
Jackson Hole-Star Valley-
Including the cities of Alpine, Jackson, Afton, Star Valley
Ranch, and Thayne
307 AM MST Fri Jan 31 2025

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
11 PM MST SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 12
  and 20 inches. Winds gusting as high as 40 mph. Snow will decrease
  briefly Sunday morning before another wave of snow arrives Sunday
  afternoon.

* WHERE...Jackson Hole and Star Valley.

* WHEN...From 11 AM this morning to 11 PM MST Saturday.

* IMPACTS...Travel could be very difficult. Gusty winds will bring
  blowing 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 .

&&

$$

WYZ025-010000-
/O.CON.KRIW.WS.W.0003.250131T1800Z-250203T0600Z/
Upper Green River Basin Foothills-
Including the cities of Pinedale
307 AM MST Fri Jan 31 2025

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
11 PM MST SUNDAY...

* WHAT...Heavy snow expected. Total snow accumulations between 10
  and 20 inches around Bondurant. 6 to 12 inches is expected near
  Pinedale. Winds gusting as high as 40 mph.

* WHERE...Upper Green River Basin Foothills.

* WHEN...From 11 AM this morning to 11 PM MST Sunday.

* IMPACTS...Travel could be very difficult. Gusty winds will bring
  blowing 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/ .

Hattings