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

12 Miles NE Weed 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: 33 °F
Rain/Snow
Christmas Day
High: 42 °F
Rain/Snow
Thursday Night
Low: 29 °F
Rain/Snow
then Snow
Showers
Likely
Friday
High: 41 °F
Snow
Friday Night
Low: 24 °F
Snow Likely
then Chance
Snow
Saturday
High: 37 °F
Slight Chance
Snow
Saturday Night
Low: 19 °F
Mostly Cloudy
Sunday
High: 42 °F
Mostly Sunny

Detailed Forecast

Overnight

Rain, possibly mixed with snow showers before 3am, then rain showers between 3am and 4am, then rain, possibly mixed with snow showers after 4am. Snow level 5600 feet. Low around 33. Southeast wind around 13 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than a half inch possible.

Christmas Day

Rain and snow showers. Snow level 5100 feet lowering to 4500 feet in the afternoon . High near 42. South wind 8 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Thursday Night

Rain and snow showers likely before 7pm, then snow showers. Low around 29. South southwest wind 8 to 11 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Friday

Snow showers likely before 10am, then snow, mainly after 10am. High near 41. South southwest wind 6 to 11 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

Friday Night

Snow likely, mainly before 10pm. Mostly cloudy, with a low around 24. West wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Saturday

A 20 percent chance of snow. Mostly sunny, with a high near 37.

Saturday Night

Mostly cloudy, with a low around 19.

Sunday

Mostly sunny, with a high near 42.

Sunday Night

Mostly clear, with a low around 24.

Monday

Sunny, with a high near 47.

Monday Night

Mostly clear, with a low around 30.