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.

light rain,mist

54°F

12°C

Humidity	87%
Wind Speed	S 11 MPH
Barometer	29.69 in (1005.42 mb)
Dewpoint	50°F (10°C)
Visibility	6.00 mi
Last update	25 Dec 05:35 AM PST

More Information:

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

Extended Forecast for

2 Miles WNW Concord CA

Flood Watch December 25, 05:50am until December 26, 10:00pm

Wind Advisory December 25, 05:50am until December 25, 10:00am

Flood Advisory December 25, 05:50am until December 25, 07:45am

Click here for hazard details and duration

Flood Watch

Wind Advisory

Flood Advisory

Flood Watch December 25, 05:50am until December 26, 10:00pm
Wind Advisory December 25, 05:50am until December 25, 10:00am
Flood Advisory December 25, 05:50am until December 25, 07:45am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 52 °F
Severe
Thunderstorms
Christmas Day
High: 57 °F
Severe
Thunderstorms
Thursday Night
Low: 48 °F
Severe
Thunderstorms
then Rain
Likely
Friday
High: 55 °F
Rain
Friday Night
Low: 44 °F
Chance Rain
then Slight
Chance Rain
Saturday
High: 52 °F
Slight Chance
Rain then
Mostly Sunny
Saturday Night
Low: 39 °F
Mostly Clear
Sunday
High: 50 °F
Mostly Sunny

Detailed Forecast

Overnight

Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 52. South wind around 16 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Christmas Day

Rain and possibly a thunderstorm before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain after 4pm. Some of the storms could be severe. High near 57. South southwest wind 14 to 18 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Rain before 7pm, then showers and possibly a thunderstorm between 7pm and 10pm, then rain likely after 10pm. Some of the storms could be severe. Low around 48. Southeast wind 10 to 14 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

Rain, mainly before 4pm. High near 55. South wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

A 50 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 44. Southwest wind 3 to 5 mph. New precipitation amounts of less than a tenth of an inch possible.

Saturday

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

Saturday Night

Mostly clear, with a low around 39.

Sunday

Mostly sunny, with a high near 50.

Sunday Night

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

Monday

Patchy frost before 7am. Otherwise, sunny, with a high near 51.

Monday Night

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