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, 04:00 PM PST

Current conditions at

Merced / Castle Air Force Base (KMER)

Lat: 37.36667°NLon: 120.56667°WElev: 187.0ft.

Overcast

N/A

Humidity	NA
Wind Speed	SSE 24 MPH
Barometer	NA
Dewpoint	N/A
Visibility	10.00 mi
Last update	NA

More Information:

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

Extended Forecast for

7 Miles ESE Livingston CA

Flood Watch December 25, 10:32pm until December 26, 04:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 25, 10:32pm until December 26, 04:00pm
NOW until 4:00pm Fri
Flood Watch
Tonight
Low: 50 °F
Showers
Friday
High: 57 °F
Showers
Likely
Friday Night
Low: 44 °F
Chance Rain
Saturday
High: 51 °F
Mostly Sunny
Saturday Night
Low: 38 °F
Partly Cloudy
Sunday
High: 47 °F
Mostly Sunny
Sunday Night
Low: 37 °F
Partly Cloudy
Monday
High: 47 °F
Mostly Sunny

Detailed Forecast

Tonight

Showers and possibly a thunderstorm before 4am, then rain likely after 4am. Low around 50. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

Rain likely before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then rain likely after 1pm. Mostly cloudy, with a high near 57. Southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

A 50 percent chance of rain. Mostly cloudy, with a low around 44. East southeast wind around 5 mph. New precipitation amounts of less than a tenth of an inch possible.

Saturday

Mostly sunny, with a high near 51. Northwest wind around 5 mph.

Saturday Night

Partly cloudy, with a low around 38. Northwest wind around 5 mph.

Sunday

Mostly sunny, with a high near 47. Northwest wind around 5 mph.

Sunday Night

Partly cloudy, with a low around 37. Calm wind.

Monday

Mostly sunny, with a high near 47. Calm wind.

Monday Night

Partly cloudy, with a low around 37. Calm wind.