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	ESE 3 MPH
Barometer	29.73 in (1006.77 mb)
Dewpoint	36°F (2°C)
Visibility	10.00 mi
Last update	24 Dec 08:05 PM MST

More Information:

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

Extended Forecast for

7 Miles NNE Mackay ID

Winter Weather Advisory December 24, 08:15pm until December 25, 05:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory December 24, 08:15pm until December 25, 05:00pm
NOW until 5:00pm Thu
Winter Weather Advisory
Tonight
Low: 20 °F
Heavy Snow
and Breezy
Christmas Day
High: 20 °F⇓
Snow Likely
Thursday Night
Low: 15 °F
Heavy Snow
and Breezy
Friday
High: 18 °F
Heavy Snow
and Windy
then Heavy
Snow and
Breezy
Friday Night
Low: 5 °F
Snow Likely
and Breezy
Saturday
High: 6 °F
Chance Snow
and Breezy
Saturday Night
Low: -5 °F
Partly Cloudy
and Blustery
Sunday
High: 6 °F
Cold

Detailed Forecast

Tonight

Snow. The snow could be heavy at times. Low around 20. Breezy, with a south southwest wind 18 to 26 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 10 to 14 inches possible.

Christmas Day

A chance of snow before 8am, then snow likely after 3pm. Mostly cloudy, with a temperature falling to around 17 by 4pm. South wind 15 to 18 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

Thursday Night

Snow. The snow could be heavy at times. Low around 15. Wind chill values as low as -4. Breezy, with a south wind 18 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

Friday

Snow. The snow could be heavy at times. High near 18. Wind chill values as low as -3. Windy, with a south southwest wind 22 to 30 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

Friday Night

Snow likely. Mostly cloudy, with a low around 5. Breezy, with a west southwest wind 20 to 25 mph, with gusts as high as 28 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 6. Breezy. New snow accumulation of less than one inch possible.

Saturday Night

Partly cloudy, with a low around -5. Blustery.

Sunday

Mostly sunny and cold, with a high near 6.

Sunday Night

Mostly clear, with a low around 0.

Monday

Sunny, with a high near 13.

Monday Night

Mostly cloudy, with a low around 8.