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

DEVILS POST PILE RAWS NEAR MAMMOTH LAKES 6WSW DPO (DPPC1)

Lat: 37.63° N Lon: 119.09333° W Elev: 8024.0 ft.

31°F

-1°C

Humidity	97%
Wind Speed	W 0 MPH
Barometer	NA
Dewpoint	30°F (-1°C)
Visibility	NA
Last update	24 Dec 06:00 AM PST

More Information:

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

Detailed forecast for

Upper San Joaquin River

Today

Breezy. Rain showers in the morning. Snow showers and slight chance of thunderstorms through the day. Rain showers late in the afternoon. Some thunderstorms may produce heavy rainfall. Precipitation may be heavy at times until late afternoon. Snow accumulation up to 39 inches. Snow level 7500 feet. Highs 29 to 41. South winds 15 to 25 mph with gusts to around 55 mph decreasing to 10 to 15 mph with gusts to around 40 mph in the afternoon. Chance of precipitation near 100 percent.

Tonight

Windy. Snow showers, rain showers and slight chance of thunderstorms in the evening, then snow showers and slight chance of thunderstorms after midnight. Some thunderstorms may produce heavy rainfall. Snow accumulation up to 36 inches. Near steady temperature in the upper 20s. South winds 15 to 30 mph. Gusts up to 60 mph increasing to 70 mph after midnight. Chance of precipitation near 100 percent.

Christmas Day

Windy. Snow in the morning, then snow showers in the afternoon. Snow may be heavy at times. Snow accumulation up to 34 inches. Near steady temperature in the upper 20s. South winds 15 to 30 mph with gusts to around 65 mph. Chance of snow near 100 percent.

Thursday Night

Windy. Snow showers. Snow may be heavy at times. Heavy snow accumulations. Near steady temperature in the upper 20s. Southwest winds 15 to 30 mph with gusts to around 70 mph. Chance of snow near 100 percent.

Friday

Breezy. Snow showers in the morning, then snow in the afternoon. Snow may be heavy at times. Heavy snow accumulations. Near steady temperature in the mid 20s. Southwest winds 10 to 25 mph with gusts to around 60 mph decreasing to 5 to 15 mph with gusts to around 35 mph in the afternoon. Chance of snow near 100 percent.

Friday Night

Colder. Mostly cloudy with a 50 percent chance of snow. Lows 8 to 20.

Saturday

Partly sunny with a 40 percent chance of snow. Highs 20 to 36.

Saturday Night Through Sunday Night

Mostly clear. Lows 10 to 26. Highs 25 to 41.

Monday And Monday Night

Mostly clear. Highs 30 to 46. Lows 20 to 32.

Tuesday

Not as cool. Mostly sunny. Highs 35 to 49.