Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Hazardous Weather Conditions

Winter Weather Advisory in effect from December 24, 05:00 AM MST until December 25, 05:00 PM MST

Current conditions at

Challis - Challis Airport (KLLJ)

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

Clear

27°F

-3°C

Humidity	92%
Wind Speed	W 3 MPH
Barometer	29.87 in (1011.51 mb)
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Last update	24 Dec 02:05 AM MST

More Information:

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

Extended Forecast for

9 Miles NNE Mackay ID

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

Click here for hazard details and duration

Winter Weather Advisory

Overnight
Low: 24 °F
Partly Cloudy
Wednesday
High: 30 °F
Heavy Snow
and Breezy
Wednesday Night
Low: 24 °F
Heavy Snow
Christmas Day
High: 28 °F
Snow
Thursday Night
Low: 20 °F
Snow
Friday
High: 25 °F
Heavy Snow
then Snow
Likely
Friday Night
Low: 8 °F
Chance Snow
and Breezy
Saturday
High: 14 °F
Mostly Sunny
and Breezy
then Mostly
Sunny
Saturday Night
Low: 4 °F
Partly Cloudy

Detailed Forecast

Overnight

Partly cloudy, with a low around 24. South southwest wind 15 to 17 mph, with gusts as high as 26 mph.

Wednesday

Snow, mainly after 10am. The snow could be heavy at times. High near 30. Breezy, with a south wind 21 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 90%. New snow accumulation of 7 to 11 inches possible.

Wednesday Night

Snow. The snow could be heavy at times. Low around 24. South wind 18 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New snow accumulation of 10 to 14 inches possible.

Christmas Day

Snow. High near 28. South southwest wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Thursday Night

Snow. Low around 20. South southwest wind 15 to 18 mph, with gusts as high as 31 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 25. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

Friday Night

A 30 percent chance of snow. Mostly cloudy, with a low around 8. Breezy. New snow accumulation of less than a half inch possible.

Saturday

Mostly sunny, with a high near 14. Breezy.

Saturday Night

Partly cloudy, with a low around 4.

Sunday

Mostly sunny, with a high near 17.

Sunday Night

Mostly clear, with a low around 10.