Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Hazardous Weather Conditions

Current conditions at

K2MRS Orinda (D1132)

Lat: 37.87444°NLon: 122.15819°WElev: 702.0ft.

53°F

12°C

Humidity	96%
Wind Speed	E 0 MPH
Barometer	29.84 in (1010.5 mb)
Dewpoint	52°F (11°C)
Visibility	NA
Last update	23 Dec 02:46 AM PST

More Information:

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

Extended Forecast for

2 Miles WNW Lamorinda CASimilar City Names

Flood Watch December 24, 12:36am until December 26, 10:00pm

Wind Advisory until December 24, 04:00am

Click here for hazard details and duration

Flood Watch

Wind Advisory

Flood Watch December 24, 12:36am until December 26, 10:00pm
Wind Advisory until December 24, 04:00am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 52 °F
Showers and
Breezy
Wednesday
High: 58 °F
Showers then
Severe
Thunderstorms
Wednesday Night
Low: 53 °F
Severe
Thunderstorms
and Breezy
Christmas Day
High: 54 °F
Severe
Thunderstorms
then Showers
Thursday Night
Low: 48 °F
Severe
Thunderstorms
Friday
High: 54 °F
Showers
Friday Night
Low: 43 °F
Showers
Likely
Saturday
High: 52 °F
Chance
Showers and
Patchy Fog

Detailed Forecast

Overnight

Showers, with thunderstorms also possible after 1am. Low around 52. Breezy, with a south wind 21 to 24 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday

Showers before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could be severe. High near 58. South southeast wind 7 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and thunderstorms, mainly before 10pm, then showers and possibly a thunderstorm after 1am. Some of the storms could be severe. Steady temperature around 53. Breezy, with a south wind 17 to 22 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Christmas Day

Showers and possibly a thunderstorm. Some of the storms could be severe. High near 54. South wind 18 to 20 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation 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 48. South wind 18 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Friday

Showers, with thunderstorms also possible after 4pm. High near 54. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

Showers likely and possibly a thunderstorm before 7pm, then showers likely between 7pm and 10pm, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.

Saturday

A chance of showers, mainly before 10am. Patchy fog before 1pm. Otherwise, partly sunny, with a high near 52.

Saturday Night

Mostly clear, with a low around 38.

Sunday

Mostly sunny, with a high near 51.

Sunday Night

Mostly clear, with a low around 37.

Monday

Patchy fog. Otherwise, mostly sunny, with a high near 52.

Monday Night

Partly cloudy, with a low around 38.