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

Flood Watch until December 26, 10:00 PM PST

Current conditions at

HAWKEYE (HWKC1)

Lat: 38.73509°NLon: 122.83706°WElev: 2024.0ft.

46°F

8°C

Humidity	100%
Wind Speed	S 30 MPH
Barometer	NA
Dewpoint	46°F (8°C)
Visibility	NA
Wind Chill	37°F (3°C)
Last update	25 Dec 12:56 PM PST

More Information:

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

Extended Forecast for

6 Miles NNE Calistoga CA

Flood Watch December 25, 02:06pm until December 26, 10:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 25, 02:06pm until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
Christmas Day
High: 48 °F
Severe
Thunderstorms
Tonight
Low: 46 °F
Severe
Thunderstorms
Friday
High: 47 °F
Showers
Friday Night
Low: 41 °F
Showers
Likely then
Chance
Showers
Saturday
High: 48 °F
Slight Chance
Showers then
Sunny
Saturday Night
Low: 38 °F
Mostly Clear
Sunday
High: 51 °F
Sunny
Sunday Night
Low: 39 °F
Mostly Clear

Detailed Forecast

Christmas Day

Showers and possibly a thunderstorm. Some of the storms could be severe. High near 48. South wind around 16 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Showers and possibly a thunderstorm. Some of the storms could be severe. Steady temperature around 46. South southwest wind 14 to 20 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Friday

Showers, with thunderstorms also possible after 4pm. High near 47. South wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Friday Night

Showers likely and possibly a thunderstorm before 9pm, then a chance of showers. Mostly cloudy, with a low around 41. South wind around 7 mph becoming north northwest after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

A 20 percent chance of showers before 10am. Mostly sunny, with a high near 48. North wind around 6 mph.

Saturday Night

Mostly clear, with a low around 38.

Sunday

Sunny, with a high near 51.

Sunday Night

Mostly clear, with a low around 39.

Monday

Sunny, with a high near 53.

Monday Night

Mostly clear, with a low around 40.