Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Hazardous Weather Conditions

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Fair and Windy

32°F

0°C

Humidity	75%
Wind Speed	NW 40 G 54 mph
Barometer	29.81 in
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Wind Chill	16°F (-9°C)
Last update	9 Dec 11:35 pm CST

More Information:

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

Extended Forecast for

Gettysburg SD

Winter Weather Advisory December 10, 06:00pm until December 11, 12:00pm

High Wind Warning December 9, 11:48pm until December 10, 03:00am

Click here for hazard details and duration

Winter Weather Advisory

High Wind Warning

High Wind Warning December 9, 11:48pm until December 10, 03:00am
NOW until 3:00am Wed
High Wind Warning
Tonight
Low: 15 °F
Partly Cloudy
and Very
Windy
Wednesday
High: 22 °F
Partly Sunny
and Blustery
then Mostly
Cloudy
Wednesday Night
Low: 15 °F
Chance Snow
then Wintry
Mix Likely
Thursday
High: 31 °F
Freezing Rain
Likely
Thursday Night
Low: 4 °F
Chance Snow
Friday
High: 10 °F
Chance Snow
Friday Night
Low: -4 °F
Chance Snow
then Heavy
Snow
Saturday
High: 3 °F
Snow Likely
then Slight
Chance Snow

Detailed Forecast

Tonight

Partly cloudy, with a low around 15. Very windy, with a northwest wind 33 to 43 mph decreasing to 22 to 32 mph after midnight. Winds could gust as high as 55 mph.

Wednesday

Increasing clouds, with a high near 22. Blustery, with a northwest wind 16 to 21 mph becoming east southeast 7 to 12 mph in the afternoon. Winds could gust as high as 31 mph.

Wednesday Night

Snow likely before 3am, then snow and freezing rain likely. Cloudy, with a low around 15. East southeast wind 7 to 11 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

Thursday

Freezing rain likely, mainly before noon. Cloudy, with a high near 31. Southeast wind around 11 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New ice accumulation of around a 0.1 of an inch possible.

Thursday Night

A chance of snow. Cloudy, with a low around 4. North northwest wind 11 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.

Friday

A chance of snow. Mostly cloudy and cold, with a high near 10. North northwest wind 13 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.

Friday Night

Snow likely, mainly after midnight. The snow could be heavy at times. Cloudy, with a low around -4. Northeast wind 8 to 10 mph. Chance of precipitation is 70%.

Saturday

Snow likely, mainly before noon. Mostly cloudy and cold, with a high near 3. Northeast wind 9 to 11 mph becoming north northwest in the afternoon. Chance of precipitation is 60%.

Saturday Night

Mostly cloudy, with a low around -12. North wind 8 to 10 mph becoming east southeast after midnight.

Sunday

Partly sunny, with a high near 16.

Sunday Night

Mostly cloudy, with a low around 4.

Monday

Mostly sunny, with a high near 27.

Monday Night

Mostly cloudy, with a low around 9.

Tuesday

Mostly sunny, with a high near 32.