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

25°F

-4°C

Humidity	86%
Wind Speed	NW 30 G 39 mph
Barometer	29.96 in
Dewpoint	21°F (-6°C)
Visibility	10.00 mi
Wind Chill	8°F (-13°C)
Last update	10 Dec 2:36 am 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

Click here for hazard details and duration

Winter Weather Advisory

Overnight
Low: 15 °F
Partly Cloudy
and Windy
Wednesday
High: 21 °F
Sunny and
Blustery then
Mostly Cloudy
Wednesday Night
Low: 15 °F
Chance Snow
then Wintry
Mix Likely
Thursday
High: 32 °F
Wintry Mix
Likely then
Chance Wintry
Mix
Thursday Night
Low: 4 °F
Chance Snow
Friday
High: 13 °F
Cloudy then
Slight Chance
Snow
Friday Night
Low: -3 °F
Chance Snow
then Snow
Saturday
High: 4 °F
Chance Snow
then Partly
Sunny
Saturday Night
Low: -10 °F
Mostly Cloudy

Detailed Forecast

Overnight

Partly cloudy, with a low around 15. Windy, with a northwest wind 29 to 34 mph decreasing to 23 to 28 mph. Winds could gust as high as 47 mph.

Wednesday

Increasing clouds, with a high near 21. Blustery, with a northwest wind 17 to 22 mph becoming northeast 6 to 11 mph in the afternoon. Winds could gust as high as 34 mph.

Wednesday Night

A chance of snow before 4am, then a chance of sleet between 4am and 5am, then freezing rain and sleet likely after 5am. Cloudy, with a low around 15. Southeast wind 6 to 14 mph. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow and sleet accumulation of less than a half inch possible.

Thursday

Freezing rain likely, possibly mixed with sleet before 7am, then freezing rain likely between 7am and 3pm, then a chance of snow after 3pm. Cloudy, with a high near 32. South southeast wind 10 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%. New ice accumulation of less than a 0.1 of an inch possible. Little or no snow and sleet accumulation expected.

Thursday Night

A chance of snow, mainly before midnight. Cloudy, with a low around 4. North northwest wind 13 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

Friday

A slight chance of snow after noon. Cloudy, with a high near 13. North northwest wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

Friday Night

Snow, mainly after midnight. Low around -3. North wind 8 to 10 mph becoming east northeast after midnight. Chance of precipitation is 80%.

Saturday

A chance of snow before noon. Mostly cloudy and cold, with a high near 4. East northeast wind around 10 mph becoming north in the afternoon. Chance of precipitation is 50%.

Saturday Night

Mostly cloudy, with a low around -10. North wind 7 to 10 mph becoming southeast after midnight.

Sunday

Mostly sunny, with a high near 18.

Sunday Night

Partly cloudy, with a low around 9.

Monday

Mostly sunny, with a high near 31.

Monday Night

Partly cloudy, with a low around 17.

Tuesday

Partly sunny, with a high near 39.