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

Current conditions at

Mount Shasta (KMHS)

Lat: 41.31494°NLon: 122.31702°WElev: 3540.0ft.

Rain

40°F

4°C

Humidity	96%
Wind Speed	N 0 MPH
Barometer	29.51 in (999.32 mb)
Dewpoint	39°F (4°C)
Visibility	9.00 mi
Last update	24 Dec 08:56 PM PST

More Information:

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

Extended Forecast for

15 Miles ENE Weed CA

Wind Advisory December 25, 01:00am until December 25, 01:00pm

Winter Storm Warning December 24, 09:22pm until December 26, 10:00am

Click here for hazard details and duration

Wind Advisory

Winter Storm Warning

Winter Storm Warning December 24, 09:22pm until December 26, 10:00am
NOW until 10:00am Fri
Winter Storm Warning
Tonight
Low: 28 °F
Heavy Snow
and Windy
Christmas Day
High: 30 °F⇓
Heavy Snow
and Windy
Thursday Night
Low: 25 °F
Heavy Snow
and Breezy
Friday
High: 28 °F
Snow and
Windy
Friday Night
Low: 20 °F
Snow Likely
then Chance
Snow
Saturday
High: 23 °F
Mostly Sunny
Saturday Night
Low: 17 °F
Partly Cloudy
Sunday
High: 28 °F
Mostly Sunny

Detailed Forecast

Tonight

Snow. The snow could be heavy at times. Steady temperature around 28. Windy, with a south southeast wind 31 to 36 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 11 to 17 inches possible.

Christmas Day

Snow. The snow could be heavy at times. Temperature falling to around 25 by 9am. Windy, with a south wind 29 to 36 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of 13 to 19 inches possible.

Thursday Night

Snow. The snow could be heavy at times. Low around 25. Breezy, with a south wind 23 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New snow accumulation of 8 to 12 inches possible.

Friday

Snow. High near 28. Windy, with a south southwest wind 23 to 31 mph, with gusts as high as 47 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

Friday Night

Snow likely, mainly before 10pm. Mostly cloudy, with a low around 20. West wind 9 to 13 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Saturday

Mostly sunny, with a high near 23.

Saturday Night

Partly cloudy, with a low around 17.

Sunday

Mostly sunny, with a high near 28.

Sunday Night

Mostly clear, with a low around 23.

Monday

Sunny, with a high near 33.

Monday Night

Mostly clear, with a low around 28.