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 Weather Advisory until December 25, 05:00 PM MST

Current conditions at

Challis - Challis Airport (KLLJ)

Lat: 44.523°NLon: 114.21611°WElev: 5026.0ft.

Rain

37°F

3°C

Humidity	93%
Wind Speed	SE 4 MPH
Barometer	29.73 in (1006.77 mb)
Dewpoint	36°F (2°C)
Visibility	7.00 mi
Wind Chill	34°F (1°C)
Last update	24 Dec 08:20 PM MST

More Information:

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

Extended Forecast for

22 Miles NNW Mackay ID

Winter Weather Advisory December 24, 08:32pm until December 25, 05:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory December 24, 08:32pm until December 25, 05:00pm
NOW until 5:00pm Thu
Winter Weather Advisory
Tonight
Low: 22 °F
Heavy Snow
and Breezy
Christmas Day
High: 22 °F⇓
Chance Snow
Thursday Night
Low: 17 °F
Snow and
Breezy
Friday
High: 20 °F
Breezy. Heavy
Snow then
Snow Likely
Friday Night
Low: 7 °F
Snow Likely
and Breezy
Saturday
High: 8 °F
Chance Snow
and Breezy
Saturday Night
Low: -5 °F
Partly Cloudy
Sunday
High: 8 °F
Cold

Detailed Forecast

Tonight

Snow. The snow could be heavy at times. Low around 22. Breezy, with a south southwest wind 18 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 6 to 10 inches possible.

Christmas Day

A chance of snow before 8am, then a chance of snow after 3pm. Increasing clouds, with a temperature falling to around 19 by 10am. South southwest wind 16 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New snow accumulation of 1 to 2 inches possible.

Thursday Night

Snow. Low around 17. Wind chill values as low as -1. Breezy, with a south wind 20 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

Friday

Snow. The snow could be heavy at times. High near 20. Wind chill values as low as -2. Breezy, with a west southwest wind 22 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

Friday Night

Snow likely. Cloudy, with a low around 7. Breezy, with a west southwest wind 20 to 24 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. New snow accumulation of 3 to 5 inches possible.

Saturday

A 50 percent chance of snow. Mostly cloudy and cold, with a high near 8. Breezy. New snow accumulation of less than one inch possible.

Saturday Night

Partly cloudy, with a low around -5.

Sunday

Mostly sunny and cold, with a high near 8.

Sunday Night

Mostly clear, with a low around 2.

Monday

Sunny, with a high near 16.

Monday Night

Mostly cloudy, with a low around 10.