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

Concord, Buchanan Field (KCCR)

Lat: 37.99167°NLon: 122.05194°WElev: 23.0ft.

Clear

63°F

17°C

Humidity	55%
Wind Speed	SSE 10 MPH
Barometer	29.62 in (1003.05 mb)
Dewpoint	46°F (8°C)
Visibility	10.00 mi
Last update	24 Dec 02:20 PM PST

More Information:

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

Extended Forecast for

3 Miles NNE Pleasant Hill CA

Flood Watch December 24, 02:50pm until December 26, 10:00pm

Wind Advisory December 24, 08:00pm until December 25, 10:00am

Click here for hazard details and duration

Flood Watch

Wind Advisory

Flood Watch December 24, 02:50pm until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
This Afternoon
High: 59 °F
Severe
Thunderstorms
Tonight
Low: 55 °F
Severe
Thunderstorms
and Breezy
Christmas Day
High: 58 °F
Severe
Thunderstorms
and Breezy
Thursday Night
Low: 50 °F
Severe
Thunderstorms
then Showers
Friday
High: 54 °F
Showers
Friday Night
Low: 44 °F
Chance
Showers
Saturday
High: 53 °F
Slight Chance
Showers then
Mostly Sunny
Saturday Night
Low: 39 °F
Mostly Clear

Detailed Forecast

This Afternoon

A chance of showers, with thunderstorms also possible after 4pm. Some of the storms could be severe. Mostly cloudy, with a high near 59. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and possibly a thunderstorm. Some of the storms could be severe. Steady temperature around 55. Breezy, with a south wind 14 to 19 mph increasing to 21 to 26 mph after midnight. Winds could gust as high as 44 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Christmas Day

Showers and possibly a thunderstorm before 7am, then showers between 7am and 10am, then showers and possibly a thunderstorm after 10am. Some of the storms could be severe. High near 58. Breezy, with a south southwest wind 18 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 50. South southwest wind 17 to 21 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Friday

Showers. High near 54. South wind around 11 mph, with gusts as high as 20 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. 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 53.

Saturday Night

Mostly clear, with a low around 39.

Sunday

Mostly sunny, with a high near 51.

Sunday Night

Areas of frost after 3am. Otherwise, mostly clear, with a low around 36.

Monday

Patchy frost. Otherwise, sunny, with a high near 52.

Monday Night

Mostly clear, with a low around 37.