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.

Rain

57°F

14°C

Humidity	82%
Wind Speed	SE 5 MPH
Barometer	29.59 in (1002.03 mb)
Dewpoint	52°F (11°C)
Visibility	10.00 mi
Last update	24 Dec 06:35 PM PST

More Information:

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

Extended Forecast for

4 Miles WNW Pleasant Hill CA

Flood Watch December 24, 06:51pm 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, 06:51pm until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
Tonight
Low: 54 °F
Breezy.
Severe
Thunderstorms
then Showers
Christmas Day
High: 55 °F
Severe
Thunderstorms
and Breezy
Thursday Night
Low: 49 °F
Breezy.
Severe
Thunderstorms
then Showers
Friday
High: 53 °F
Showers
Friday Night
Low: 43 °F
Showers
Likely then
Chance
Showers
Saturday
High: 51 °F
Slight Chance
Showers then
Mostly Sunny
Saturday Night
Low: 38 °F
Mostly Clear
Sunday
High: 49 °F
Mostly Sunny

Detailed Forecast

Tonight

Showers and possibly a thunderstorm. Some of the storms could be severe. Steady temperature around 54. Breezy, with a south wind 14 to 19 mph increasing to 24 to 29 mph after midnight. Winds could gust as high as 50 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. Some of the storms could be severe. High near 55. Breezy, with a south wind 18 to 25 mph, with gusts as high as 37 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 49. Breezy, with a south southwest wind 22 to 26 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Friday

Showers. High near 53. South wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

Showers likely, mainly before 10pm. Mostly cloudy, with a low around 43. South wind around 7 mph. Chance of precipitation is 60%. 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 51.

Saturday Night

Mostly clear, with a low around 38.

Sunday

Mostly sunny, with a high near 49.

Sunday Night

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

Monday

Areas of frost before 8am. Otherwise, sunny, with a high near 50.

Monday Night

Patchy frost. Otherwise, partly cloudy, with a low around 36.