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

STONYFORD (SYWC1)

Lat: 39.35523°NLon: 122.65831°WElev: 1540.0ft.

54°F

12°C

Humidity	87%
Wind Speed	SW 9 MPH
Barometer	NA
Dewpoint	50°F (10°C)
Visibility	NA
Last update	24 Dec 05:26 AM PST

More Information:

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

Extended Forecast for

22 Miles WNW Williams CA

Flood Watch December 24, 06:01am until December 26, 04:00pm

Winter Storm Warning December 24, 04:00pm until December 26, 10:00pm

Click here for hazard details and duration

Flood Watch

Winter Storm Warning

Flood Watch December 24, 06:01am until December 26, 04:00pm
NOW until 4:00pm Fri
Flood Watch
Today
High: 56 °F
Chance Rain
and Breezy
Tonight
Low: 40 °F
Showers and
Breezy
Christmas Day
High: 51 °F
Showers and
Breezy
Thursday Night
Low: 37 °F
Rain
Friday
High: 51 °F
Showers
Friday Night
Low: 36 °F
Rain Likely
Saturday
High: 52 °F
Slight Chance
Rain then
Sunny
Saturday Night
Low: 32 °F
Mostly Clear

Detailed Forecast

Today

A chance of rain and thunderstorms. Partly sunny, with a high near 56. Breezy, with a southeast wind 14 to 23 mph, with gusts as high as 43 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Rain and possibly a thunderstorm before midnight, then showers likely and possibly a thunderstorm between midnight and 1am, then rain after 1am. Low around 40. Breezy, with a south southeast wind 17 to 22 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Christmas Day

Rain before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then rain and possibly a thunderstorm after 4pm. High near 51. Breezy, with a south wind 21 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday Night

Rain. Low around 37. South wind around 18 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Friday

Rain before 4pm, then showers likely and possibly a thunderstorm after 4pm. High near 51. South southeast wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 90%.

Friday Night

Rain likely and possibly a thunderstorm before 10pm, then a chance of rain. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.

Saturday

A 20 percent chance of rain before 10am. Mostly sunny, with a high near 52.

Saturday Night

Mostly clear, with a low around 32.

Sunday

Sunny, with a high near 55.

Sunday Night

Mostly clear, with a low around 34.

Monday

Sunny, with a high near 58.