weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Winter Weather Advisory


URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
1248 PM MDT Mon May 12 2025

IDZ009-010-131800-
/O.NEW.KMSO.WW.Y.0033.250513T0600Z-250513T1800Z/
Western Lemhi County-Eastern Lemhi County-
1248 PM MDT Mon May 12 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO NOON
MDT TUESDAY ABOVE 7000 FT...

* WHAT...Snow expected above 7000 ft. Likelihood of minor to
  moderate impacts from around 1 to 3 inches of snow is 60 percent,
  and 3 to 6 inches of snow is 10 percent.

* WHERE...Bannock Pass, Williams Creek Summit, Highway 28 Tendoy to
  Lone Pine, and Lemhi Pass.

* WHEN...From midnight tonight to noon MDT Tuesday.

* IMPACTS...For MINOR impacts from snow, expect a few inconveniences
  to normal activities. Use caution while driving. Winter traveling
  conditions. The hazardous conditions could impact the Tuesday
  morning commute, especially over higher passes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

&&

$$

URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
123 PM MDT Mon May 12 2025

MTZ322-327-329-330-131030-
/O.CON.KTFX.WW.Y.0038.250513T0200Z-250513T1500Z/
Elkhorn and Boulder Mountains-Northwest Beaverhead County-Ruby
Mountains and Southern Beaverhead Mountains-Gallatin and Madison
County Mountains and Centennial Mountains-
Including the following locations: Wickes, Corbin, Homestake
Pass, West Yellowstone, Boulder, Elk Park Pass, Big Sky, Montana
City, Targhee Pass, Raynolds Pass, Clancy, Wise River, Big Hole
Pass, Monida Pass, Dewey, Wisdom, and Chief Joseph Pass
123 PM MDT Mon May 12 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 9 AM MDT TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 8 inches
  above 7000 feet. Isolated higher amounts around Pony.

* WHERE...The Mountains of Southwestern Montana south of Interstate
  90, and Elkhorn and Boulder Mountains.

* WHEN...From 8 PM this evening to 9 AM MDT Tuesday.

* IMPACTS...Higher mountain passes will likely become snow covered
  and slippery.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$

IG

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE