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

Arroyo Seco (CI114)

Lat: 36.359°NLon: 121.29°WElev: 235.0ft.

N/A

Humidity	82%
Wind Speed	NE 4 MPH
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	07 Mar 10:00 AM PST

More Information:

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

Extended Forecast for

7 Miles SSW Greenfield CA

Flood Watch December 25, 10:17am until December 26, 10:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 25, 10:17am until December 26, 10:00pm
NOW until 10:00pm Fri
Flood Watch
Christmas Day
High: 58 °F
Rain then
Severe
Thunderstorms
Tonight
Low: 43 °F
Severe
Thunderstorms
and Breezy
then Rain
Friday
High: 56 °F
Rain
Friday Night
Low: 38 °F
Rain Likely
then Chance
Rain
Saturday
High: 55 °F
Chance Rain
Saturday Night
Low: 35 °F
Mostly Clear
then Patchy
Frost and
Patchy Fog
Sunday
High: 58 °F
Areas Frost
and Patchy
Fog then
Sunny
Sunday Night
Low: 35 °F
Clear then
Patchy Frost

Detailed Forecast

Christmas Day

Rain before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then rain after 4pm. Some of the storms could be severe. High near 58. South wind 14 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Rain before 7pm, then showers and possibly a thunderstorm between 7pm and 10pm, then rain after 10pm. Some of the storms could be severe. Low around 43. Breezy, with a south wind 19 to 29 mph becoming southeast 8 to 13 mph. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Friday

Rain. High near 56. South wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 38. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Saturday

A 30 percent chance of rain, mainly before 10am. Mostly sunny, with a high near 55. North northwest wind 3 to 8 mph.

Saturday Night

Patchy fog after 4am. Patchy frost after 3am. Otherwise, mostly clear, with a low around 35.

Sunday

Patchy fog before 7am. Areas of frost before 8am. Otherwise, sunny, with a high near 58.

Sunday Night

Patchy frost after 1am. Otherwise, clear, with a low around 35.

Monday

Areas of frost before 8am. Otherwise, sunny, with a high near 62.

Monday Night

Mostly clear, with a low around 38.