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

Alturas (KAAT)

Lat: 41.48362°NLon: 120.5615°WElev: 4383.0ft.

Rain

43°F

6°C

Humidity	81%
Wind Speed	SSE 14 MPH
Barometer	29.65 in (1004.06 mb)
Dewpoint	37°F (3°C)
Visibility	10.00 mi
Wind Chill	36°F (2°C)
Last update	24 Dec 10:20 AM PST

More Information:

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

Extended Forecast for

11 Miles ENE Bieber CA

High Wind Watch December 25, 01:00am until December 25, 01:00pm

Winter Storm Warning December 24, 10:34am until December 26, 10:00am

High Wind Warning December 24, 10:34am until December 24, 01:00pm

Click here for hazard details and duration

High Wind Watch

Winter Storm Warning

High Wind Warning

Winter Storm Warning December 24, 10:34am until December 26, 10:00am
High Wind Warning December 24, 10:34am until December 24, 01:00pm
NOW: Multiple hazards in effect
Click HERE for Details
Today
High: 49 °F
Rain Likely
then Slight
Chance Rain
Tonight
Low: 33 °F
Rain
Christmas Day
High: 43 °F
Rain/Snow and
Breezy
Thursday Night
Low: 28 °F
Rain/Snow
Friday
High: 41 °F
Snow then
Rain/Snow
Friday Night
Low: 23 °F
Rain/Snow
Likely then
Chance Snow
Saturday
High: 39 °F
Slight Chance
Snow
Saturday Night
Low: 16 °F
Partly Cloudy

Detailed Forecast

Today

Rain likely, mainly before noon. Snow level 5700 feet. Partly sunny, with a high near 49. South wind 15 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

Tonight

Rain, mainly before 1am. Snow level 5600 feet. Low around 33. Southeast wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Christmas Day

Rain, possibly mixed with snow. Snow level 5300 feet lowering to 4700 feet in the afternoon . High near 43. Breezy, with a south southwest wind 20 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Thursday Night

Rain, possibly mixed with snow. Snow level 4400 feet. Low around 28. South southwest wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

Friday

Snow before 1pm, then rain and snow. High near 41. South southwest wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Friday Night

Rain and snow likely, becoming all snow after 7pm. Mostly cloudy, with a low around 23. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Saturday

A 20 percent chance of snow. Partly sunny, with a high near 39.

Saturday Night

Partly cloudy, with a low around 16.

Sunday

Mostly sunny, with a high near 42.

Sunday Night

Mostly clear, with a low around 20.

Monday

Sunny, with a high near 48.

Monday Night

Mostly clear, with a low around 23.