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.

Mostly Cloudy

45°F

7°C

Humidity	76%
Wind Speed	NA 6 MPH
Barometer	29.59 in (1002.03 mb)
Dewpoint	38°F (3°C)
Visibility	10.00 mi
Wind Chill	42°F (6°C)
Last update	24 Dec 02:56 PM PST

More Information:

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

Extended Forecast for

9 Miles ENE Mt Shasta CA

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

Winter Storm Warning December 24, 03:25pm until December 26, 10:00am

Click here for hazard details and duration

Wind Advisory

Winter Storm Warning

Winter Storm Warning December 24, 03:25pm until December 26, 10:00am
NOW until 10:00am Fri
Winter Storm Warning
This Afternoon
High: 22 °F
Heavy Snow
Tonight
Low: 21 °F
Heavy Snow
and Windy
Christmas Day
High: 24 °F⇓
Heavy Snow
and Windy
Thursday Night
Low: 18 °F
Heavy Snow
and Windy
Friday
High: 21 °F
Heavy Snow
and Windy
Friday Night
Low: 15 °F
Snow then
Chance Snow
Saturday
High: 19 °F
Slight Chance
Snow
Saturday Night
Low: 11 °F
Partly Cloudy

Detailed Forecast

This Afternoon

A 40 percent chance of snow, mainly before 4pm. The snow could be heavy at times. Mostly cloudy, with a steady temperature around 22. South wind around 20 mph, with gusts as high as 39 mph. Total daytime snow accumulation of 9 to 13 inches possible.

Tonight

Snow, mainly after 8pm. The snow could be heavy at times. Steady temperature around 21. Wind chill values as low as -1. Windy, with a south wind 23 to 28 mph increasing to 29 to 34 mph after midnight. Winds could gust as high as 50 mph. Chance of precipitation is 100%. New snow accumulation of 26 to 32 inches possible.

Christmas Day

Snow. The snow could be heavy at times. Temperature falling to around 18 by 9am. Wind chill values as low as -6. Windy, with a south wind 44 to 55 mph, with gusts as high as 75 mph. Chance of precipitation is 100%. New snow accumulation of 26 to 32 inches possible.

Thursday Night

Snow. The snow could be heavy at times. Low around 18. Wind chill values as low as -1. Windy, with a south wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 18 to 24 inches possible.

Friday

Snow. The snow could be heavy at times. High near 21. Windy, with a south wind 24 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.

Friday Night

Snow, mainly before 10pm. Low around 15. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

Saturday

A 20 percent chance of snow. Mostly sunny, with a high near 19.

Saturday Night

Partly cloudy, with a low around 11.

Sunday

Mostly sunny, with a high near 23.

Sunday Night

Mostly clear, with a low around 18.

Monday

Sunny, with a high near 28.