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,mist

41°F

5°C

Humidity	92%
Wind Speed	ESE 5 MPH
Barometer	29.47 in (997.97 mb)
Dewpoint	39°F (4°C)
Visibility	4.00 mi
Wind Chill	38°F (3°C)
Last update	25 Dec 01:56 AM PST

More Information:

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

Extended Forecast for

9 Miles NE Mt Shasta CA

Wind Advisory until December 25, 01:00pm

Winter Storm Warning December 25, 02:17am until December 26, 10:00am

Click here for hazard details and duration

Wind Advisory

Winter Storm Warning

Wind Advisory until December 25, 01:00pm
Winter Storm Warning December 25, 02:17am until December 26, 10:00am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 10 °F
Heavy Snow
and Windy
Christmas Day
High: 13 °F
Heavy Snow
and Windy
Thursday Night
Low: 8 °F
Heavy Snow
and Windy
Friday
High: 9 °F
Heavy Snow
and Windy
Friday Night
Low: 5 °F
Snow Likely
then Chance
Snow
Saturday
High: 8 °F
Chance Snow
Saturday Night
Low: 1 °F
Partly Cloudy
Sunday
High: 13 °F
Mostly Sunny
and Breezy
then Mostly
Sunny

Detailed Forecast

Overnight

Snow showers. The snow could be heavy at times. Low around 10. Wind chill values as low as -22. Windy, with a south wind around 55 mph, with gusts as high as 80 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 31 to 37 inches possible.

Christmas Day

Snow showers. The snow could be heavy at times. High near 13. Wind chill values as low as -24. Windy, with a south wind 85 to 90 mph, with gusts as high as 115 mph. Chance of precipitation is 100%. New snow accumulation of 24 to 30 inches possible.

Thursday Night

Snow showers. The snow could be heavy at times. Low around 8. Wind chill values as low as -22. Windy, with a south wind 38 to 41 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New snow accumulation of 19 to 25 inches possible.

Friday

Snow showers before 10am, then snow, mainly after 10am. The snow could be heavy at times. High near 9. Wind chill values as low as -20. Windy, with a south southwest wind 50 to 55 mph decreasing to 37 to 42 mph in the afternoon. Winds could gust as high as 80 mph. Chance of precipitation is 90%. New snow accumulation of 10 to 14 inches possible.

Friday Night

Snow likely, mainly before 10pm. Mostly cloudy, with a low around 5. West northwest wind 17 to 20 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Saturday

A 30 percent chance of snow. Mostly sunny and cold, with a high near 8. New snow accumulation of less than a half inch possible.

Saturday Night

Partly cloudy, with a low around 1.

Sunday

Mostly sunny, with a high near 13. Breezy.

Sunday Night

Mostly clear, with a low around 8. Blustery.

Monday

Sunny, with a high near 18.

Monday Night

Mostly clear, with a low around 13.