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

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Heavy Snow Freezing Fog

32°F

0°C

Humidity	100%
Wind Speed	NA
Barometer	29.79 in
Dewpoint	32°F (0°C)
Visibility	0.15 mi
Last update	25 Dec 7:15 am CST

More Information:

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

Extended Forecast for

3 Miles N Gettysburg SD

Dense Fog Advisory until December 25, 10:00am

Click here for hazard details and duration

...

Dense Fog Advisory until December 25, 10:00am
NOW until 10:00am Thu
Dense Fog Advisory
Christmas Day
High: 47 °F
Areas
Freezing Fog
and Patchy
Fog then
Mostly Cloudy
Tonight
Low: 27 °F
Mostly Cloudy
then Patchy
Fog
Friday
High: 42 °F
Patchy Fog
then Mostly
Sunny
Friday Night
Low: 31 °F
Partly Cloudy
Saturday
High: 45 °F
Mostly Sunny
Saturday Night
Low: 6 °F
Blustery.
Mostly Cloudy
then Slight
Chance Snow
Sunday
High: 12 °F
Mostly Sunny
and Windy
Sunday Night
Low: 1 °F
Mostly Clear
and Blustery
then Mostly
Clear

Detailed Forecast

Christmas Day

Patchy fog between 8am and 11am. Areas of freezing fog before 8am. Otherwise, mostly cloudy, with a high near 47. Southeast wind 8 to 18 mph becoming southwest in the afternoon.

Tonight

Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 27. West wind 6 to 9 mph becoming north after midnight.

Friday

Patchy fog before 11am. Otherwise, mostly sunny, with a high near 42. Northeast wind 5 to 9 mph becoming south in the afternoon.

Friday Night

Partly cloudy, with a low around 31. South southeast wind 10 to 13 mph becoming west southwest after midnight.

Saturday

Mostly sunny, with a high near 45. West southwest wind 10 to 15 mph becoming north northwest in the afternoon.

Saturday Night

A slight chance of snow after midnight. Mostly cloudy, with a low around 6. Blustery, with a north northwest wind 16 to 21 mph increasing to 23 to 28 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 20%.

Sunday

Mostly sunny, with a high near 12. Windy, with a northwest wind 24 to 30 mph, with gusts as high as 41 mph.

Sunday Night

Mostly clear, with a low around 1. Blustery, with a northwest wind 15 to 22 mph, with gusts as high as 32 mph.

Monday

Sunny, with a high near 21. Northwest wind 10 to 14 mph becoming southwest in the afternoon.

Monday Night

Mostly cloudy, with a low around 12.

Tuesday

Mostly sunny, with a high near 38.

Tuesday Night

A slight chance of snow. Mostly cloudy, with a low around 14. Chance of precipitation is 20%.