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

Livermore, Livermore Municipal Airport (KLVK)

Lat: 37.69278°NLon: 121.81444°WElev: 397.0ft.

Rain

59°F

15°C

Humidity	62%
Wind Speed	S 13 MPH
Barometer	29.63 in (1003.39 mb)
Dewpoint	46°F (8°C)
Visibility	10.00 mi
Last update	24 Dec 09:15 PM PST

More Information:

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

Extended Forecast for

6 Miles SSW Discovery Bay CA

Flood Watch December 24, 09:32pm until December 26, 10:00pm

Wind Advisory until December 25, 10:00am

Click here for hazard details and duration

Flood Watch

Wind Advisory

Flood Watch December 24, 09:32pm until December 26, 10:00pm
Wind Advisory until December 25, 10:00am
NOW: Multiple hazards in effect
Click HERE for Details
Tonight
Low: 54 °F
Showers and
Breezy
Christmas Day
High: 58 °F
Showers and
Breezy
Thursday Night
Low: 48 °F
Showers
Friday
High: 54 °F
Showers
Friday Night
Low: 44 °F
Chance
Showers
Saturday
High: 50 °F
Slight Chance
Showers then
Partly Sunny
Saturday Night
Low: 38 °F
Mostly Clear
Sunday
High: 48 °F
Sunny

Detailed Forecast

Tonight

Showers, with thunderstorms also possible after 4am. Low around 54. Breezy, with an east southeast wind 22 to 25 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Christmas Day

Showers and possibly a thunderstorm. High near 58. Breezy, with a southeast wind 20 to 25 mph becoming southwest in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

Showers and possibly a thunderstorm. Low around 48. Southeast wind 16 to 18 mph becoming south southwest in the evening. Winds could gust as high as 37 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

Showers. High near 54. South southeast wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

A 50 percent chance of showers, mainly before 4am. Mostly cloudy, with a low around 44. South wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.

Saturday

A 20 percent chance of showers before 10am. Partly sunny, with a high near 50.

Saturday Night

Mostly clear, with a low around 38.

Sunday

Sunny, with a high near 48.

Sunday Night

Patchy frost after 5am. Otherwise, mostly clear, with a low around 36.

Monday

Patchy frost before 8am. Otherwise, sunny, with a high near 49.

Monday Night

Mostly clear, with a low around 37.