Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

Lat: 44.977222°NLon: 110.695278°WElev: 6138.0ft.

36°F

2°C

Humidity	73%
Wind Speed	S 8 MPH
Barometer	NA
Dewpoint	28°F (-2°C)
Visibility	NA
Wind Chill	30°F (-1°C)
Last update	08 Dec 10:15 PM MST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

5 Miles N Mount Holmes WY

Winter Storm Warning until December 10, 05:00pm

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning until December 10, 05:00pm
NOW until 5:00pm Wed
Winter Storm Warning
Tonight
Low: 25 °F
Snow Showers
and Blowing
Snow
Tuesday
High: 29 °F
Snow Showers
and Areas
Blowing Snow
Tuesday Night
Low: 22 °F
Snow Showers
and Breezy
Wednesday
High: 32 °F
Breezy. Snow
Showers then
Snow Showers
Likely
Wednesday Night
Low: 28 °F
Chance Snow
Showers and
Windy
Thursday
High: 29 °F
Snow Showers
Likely and
Breezy
Thursday Night
Low: 28 °F
Chance Snow
Showers and
Breezy
Friday
High: 29 °F
Chance Snow
Showers and
Breezy

Detailed Forecast

Tonight

Snow showers. Widespread blowing snow, mainly after 5am. Steady temperature around 25. Windy, with a southwest wind around 30 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 2 to 4 inches possible.

Tuesday

Snow showers, mainly before 4pm. Areas of blowing snow before 4pm. High near 29. Windy, with a west wind 23 to 28 mph decreasing to 16 to 21 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

Tuesday Night

Snow showers. Low around 22. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Wednesday

Snow showers. High near 32. Breezy, with a southwest wind 20 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Wednesday Night

A 50 percent chance of snow showers. Cloudy, with a low around 28. Windy, with a southwest wind 22 to 26 mph, with gusts as high as 44 mph. New snow accumulation of less than a half inch possible.

Thursday

Snow showers likely, mainly after 11am. Cloudy, with a high near 29. Breezy, with a southwest wind 18 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 60%.

Thursday Night

A 50 percent chance of snow showers. Cloudy, with a low around 28. Breezy, with a west southwest wind around 18 mph, with gusts as high as 31 mph.

Friday

A 40 percent chance of snow showers. Mostly cloudy, with a high near 29. Breezy.

Friday Night

Mostly cloudy, with a low around 25. Breezy.

Saturday

Partly sunny, with a high near 28. Breezy.

Saturday Night

Mostly cloudy, with a low around 19. Breezy.

Sunday

Partly sunny, with a high near 27. Breezy.