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

Winter Storm Warning until December 26, 10:00 AM PST

Current conditions at

ROCK CREEK (RCEC1)

Lat: 37.55983°NLon: 118.67841°WElev: 7103.0ft.

32°F

0°C

Humidity	96%
Wind Speed	SSE 2 MPH
Barometer	NA
Dewpoint	31°F (-1°C)
Visibility	NA
Last update	24 Dec 11:04 PM PST

More Information:

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

Extended Forecast for

17 Miles ESE Mammoth Lakes CA

Winter Storm Warning December 24, 11:41pm until December 26, 10:00am

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning December 24, 11:41pm until December 26, 10:00am
NOW until 10:00am Fri
Winter Storm Warning
Tonight
Low: 25 °F
Snow and
Dense
Freezing Fog
Christmas Day
High: 41 °F
Heavy Snow
and Dense
Freezing Fog
Thursday Night
Low: 26 °F
Heavy Snow
and Areas
Freezing Fog
Friday
High: 40 °F
Snow and
Dense
Freezing Fog
Friday Night
Low: 12 °F
Chance Snow
Saturday
High: 38 °F
Sunny
Saturday Night
Low: 9 °F
Mostly Clear
Sunday
High: 41 °F
Sunny

Detailed Forecast

Tonight

Snow, mainly before 4am. Widespread dense freezing fog, mainly before 1am. Low around 25. Southeast wind 10 to 15 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.

Christmas Day

Snow, mainly after 7am. The snow could be heavy at times. Patchy fog before 7am. Widespread dense freezing fog between 7am and 10am. High near 41. Southeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Thursday Night

Snow. The snow could be heavy at times. Patchy fog between 11pm and 5am. Areas of freezing fog after 5am. Low around 26. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Friday

Snow. Areas of fog between 8am and 9am. Widespread dense freezing fog before 8am. High near 40. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Friday Night

A 40 percent chance of snow. Mostly cloudy, with a low around 12. West wind around 5 mph. New snow accumulation of less than a half inch possible.

Saturday

Sunny, with a high near 38. North wind around 5 mph.

Saturday Night

Mostly clear, with a low around 9.

Sunday

Sunny, with a high near 41.

Sunday Night

Mostly clear, with a low around 12.

Monday

Sunny, with a high near 45.