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

Wind Advisory in effect from December 25, 04:00 AM PST until December 25, 10:00 PM PST

Current conditions at

SIARD (SIAN2)

Lat: 40.39433°NLon: 117.62567°WElev: 4600.0ft.

40°F

4°C

Humidity	89%
Wind Speed	S 5 MPH
Barometer	NA
Dewpoint	37°F (3°C)
Visibility	NA
Wind Chill	36°F (2°C)
Last update	25 Dec 01:38 AM PST

More Information:

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

Extended Forecast for

24 Miles SSE Unionville NV

Wind Advisory December 25, 04:00am until December 25, 10:00pm

Click here for hazard details and duration

Wind Advisory

Overnight
Low: 38 °F
Partly Cloudy
Christmas Day
High: 54 °F
Breezy.
Chance Rain
then Rain
Likely
Thursday Night
Low: 35 °F
Rain Likely
then
Rain/Snow
Likely
Friday
High: 48 °F
Rain/Snow
Likely then
Chance
Rain/Snow
Friday Night
Low: 28 °F
Mostly Cloudy
Saturday
High: 43 °F
Decreasing
Clouds
Saturday Night
Low: 20 °F
Partly Cloudy
Sunday
High: 41 °F
Sunny
Sunday Night
Low: 16 °F
Mostly Clear

Detailed Forecast

Overnight

Partly cloudy, with a low around 38. South wind around 15 mph, with gusts as high as 30 mph.

Christmas Day

Rain likely, mainly after 1pm. Snow level 6200 feet. Increasing clouds, with a high near 54. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 70%.

Thursday Night

Rain likely before 4am, then rain and snow likely. Snow level 5800 feet. Mostly cloudy, with a low around 35. South wind around 15 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Friday

Rain and snow likely before 1pm, then a chance of rain. Snow level 4600 feet. Partly sunny, with a high near 48. Southwest wind 10 to 15 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Friday Night

Mostly cloudy, with a low around 28. Southwest wind 5 to 10 mph.

Saturday

Mostly cloudy, then gradually becoming sunny, with a high near 43. West wind 5 to 10 mph.

Saturday Night

Partly cloudy, with a low around 20.

Sunday

Sunny, with a high near 41.

Sunday Night

Mostly clear, with a low around 16.

Monday

Sunny, with a high near 43.