Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Winter Weather Advisory in effect from December 26, 05:00 AM MST until December 27, 08:00 PM MST

Current conditions at

Georgetown Lake (MTGTL)

Lat: 46.191°NLon: 113.3°WElev: 6338.0ft.

39°F

4°C

Humidity	64%
Wind Speed	NE 0 MPH
Barometer	NA
Dewpoint	28°F (-2°C)
Visibility	NA
Last update	25 Dec 02:45 PM MST

More Information:

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

Extended Forecast for

21 Miles SW Georgetown MT

Winter Weather Advisory December 26, 05:00am until December 27, 08:00pm

Click here for hazard details and duration

Winter Weather Advisory

Christmas Day
High: 33 °F
Slight Chance
Snow
Tonight
Low: 24 °F
Chance Snow
Friday
High: 29 °F
Snow Likely
and Patchy
Blowing Snow
Friday Night
Low: 12 °F
Heavy Snow
and Patchy
Blowing Snow
Saturday
High: 14 °F
Snow
Saturday Night
Low: -2 °F
Partly Cloudy
Sunday
High: 15 °F
Mostly Sunny
Sunday Night
Low: 6 °F
Mostly Clear
Monday
High: 25 °F
Mostly Sunny

Detailed Forecast

Christmas Day

A 20 percent chance of snow before 5pm. Mostly cloudy, with a high near 33. South southwest wind around 7 mph, with gusts as high as 24 mph.

Tonight

A 50 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 24. South wind around 7 mph, with gusts as high as 24 mph. New snow accumulation of less than one inch possible.

Friday

Snow likely, mainly before noon. Patchy blowing snow between 11am and 3pm. Mostly cloudy, with a high near 29. Breezy, with a southwest wind 8 to 13 mph increasing to 17 to 22 mph in the morning. Winds could gust as high as 43 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Friday Night

Snow, mainly after 11pm. The snow could be heavy at times. Patchy blowing snow between 8pm and 11pm. Low around 12. Wind chill values as low as -3. West southwest wind 16 to 20 mph, with gusts as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

Saturday

Snow. High near 14. West wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Saturday Night

Partly cloudy, with a low around -2.

Sunday

Mostly sunny, with a high near 15.

Sunday Night

Mostly clear, with a low around 6.

Monday

Mostly sunny, with a high near 25.

Monday Night

Mostly cloudy, with a low around 17.

Tuesday

Mostly cloudy, with a high near 31.