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

READER RANCH (RRRC1)

Lat: 39.30351°NLon: 121.11725°WElev: 1968.0ft.

48°F

9°C

Humidity	73%
Wind Speed	NE 1 MPH
Barometer	NA
Dewpoint	40°F (4°C)
Visibility	NA
Last update	24 Dec 04:13 PM PST

More Information:

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

Extended Forecast for

3 Miles NW Grass Valley CA

Flood Watch December 24, 04:53pm until December 26, 04:00pm

High Wind Warning December 24, 04:53pm until December 25, 04:00pm

Click here for hazard details and duration

Flood Watch

High Wind Warning

Flood Watch December 24, 04:53pm until December 26, 04:00pm
High Wind Warning December 24, 04:53pm until December 25, 04:00pm
NOW: Multiple hazards in effect
Click HERE for Details
This Afternoon
High: 49 °F
Chance
Showers
Tonight
Low: 42 °F
Showers
Christmas Day
High: 48 °F
Showers
Thursday Night
Low: 39 °F
Showers
Friday
High: 47 °F
Rain
Friday Night
Low: 36 °F
Rain
Saturday
High: 50 °F
Chance Rain
then Sunny
Saturday Night
Low: 32 °F
Mostly Clear

Detailed Forecast

This Afternoon

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 49. South southeast wind around 10 mph, with gusts as high as 24 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Rain and thunderstorms before 1am, then rain between 1am and 4am, then showers and possibly a thunderstorm after 4am. Low around 42. South southeast wind 14 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Christmas Day

Rain and possibly a thunderstorm before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then rain after 4pm. High near 48. South wind 17 to 20 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Thursday Night

Rain before 7pm, then showers and possibly a thunderstorm between 7pm and 4am, then rain and possibly a thunderstorm after 4am. Low around 39. South wind around 16 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Friday

Rain. High near 47. South southeast wind 11 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.

Friday Night

Rain, mainly before 4am. Low around 36. Chance of precipitation is 80%.

Saturday

A 30 percent chance of rain before 10am. Mostly sunny, with a high near 50.

Saturday Night

Mostly clear, with a low around 32.

Sunday

Sunny, with a high near 52.

Sunday Night

Mostly clear, with a low around 34.