767
WWUS45 KRIW 221847
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1147 AM MST Sat Feb 22 2025

WYZ001-231400-
/O.NEW.KRIW.WW.Y.0012.250223T1800Z-250224T1800Z/
Yellowstone National Park-
Including the cities of Old Faithful, Mammoth, and Lake
1147 AM MST Sat Feb 22 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 11 AM MST
MONDAY...

* WHAT...Snow expected. Total snow accumulations between 2 and 6
  inches., with isolated amounts up to 8 inches for the higher
  elevations. Total snow accumulations for southern Yellowstone,
  including the Pitchstone Plateau, of 6 to 12 inches. Winds gusting
  as high as 40 mph.

* WHERE...Yellowstone National Park.

* WHEN...From 11 AM Sunday to 11 AM MST Monday.

* IMPACTS...Travel will be difficult, especially in the backcountry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 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.

&&

$$

WYZ012-231400-
/O.NEW.KRIW.WW.Y.0012.250223T1800Z-250224T1800Z/
Teton and Gros Ventre Mountains-
1147 AM MST Sat Feb 22 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 11 AM MST
MONDAY...

* WHAT...Snow expected. Total snow accumulations between 6 and 10
  inches, with up to 16 inches for the highest elevations of the
  Teton Mountains. Winds gusting as high as 40 mph, especially
  Sunday night.

* WHERE...Teton and Gros Ventre Mountains.

* WHEN...From 11 AM Sunday to 11 AM MST Monday.

* IMPACTS...Travel could be very difficult due to falling and
  blowing snow over mountain passes, such as Teton and Togwotee
  Passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 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/ .

Wittmann