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

GREEN SPRING (GNSC1)

Lat: 37.83418°NLon: 120.50311°WElev: 1108.0ft.

62°F

17°C

Humidity	55%
Wind Speed	SSE 11 MPH
Barometer	NA
Dewpoint	46°F (8°C)
Visibility	NA
Last update	23 Dec 07:03 PM PST

More Information:

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

Extended Forecast for

5 Miles SSE Groveland CA

Flood Watch December 23, 08:05pm until December 26, 04:00pm

High Wind Warning until December 25, 04:00pm

Click here for hazard details and duration

Flood Watch

High Wind Warning

Flood Watch December 23, 08:05pm until December 26, 04:00pm
High Wind Warning until December 25, 04:00pm
NOW: Multiple hazards in effect
Click HERE for Details
Tonight
Low: 46 °F
Rain Likely
then Heavy
Rain
Wednesday
High: 51 °F⇓
Heavy Rain
Wednesday Night
Low: 47 °F
Heavy Rain
Christmas Day
High: 47 °F
Heavy Rain
and Breezy
Thursday Night
Low: 40 °F
Showers
Friday
High: 44 °F
Rain
Friday Night
Low: 35 °F
Rain Likely
then Chance
Rain
Saturday
High: 47 °F
Sunny

Detailed Forecast

Tonight

Rain, mainly before 4am, then showers and possibly a thunderstorm after 4am. Some of the storms could produce heavy rainfall. Low around 46. South southeast wind 16 to 20 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Wednesday

Showers and possibly a thunderstorm before 7am, then rain after 7am. Some of the storms could produce heavy rainfall. Temperature falling to around 46 by 10am. South southeast wind 15 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Wednesday Night

Rain and possibly a thunderstorm before 1am, then showers and possibly a thunderstorm between 1am and 4am, then rain and possibly a thunderstorm after 4am. Some of the storms could produce heavy rainfall. Steady temperature around 47. South southeast wind 17 to 21 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Christmas Day

Rain. The rain could be heavy at times. High near 47. Breezy, with a south southeast wind 18 to 22 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Thursday Night

Showers and possibly a thunderstorm before 1am, then rain after 1am. Low around 40. South southeast wind 17 to 20 mph, with gusts as high as 41 mph. Chance of precipitation is 100%.

Friday

Rain. High near 44. Chance of precipitation is 100%.

Friday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.

Saturday

Sunny, with a high near 47.

Saturday Night

Mostly clear, with a low around 34.

Sunday

Sunny, with a high near 50.

Sunday Night

Mostly clear, with a low around 37.