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

Spearfish / Clyde Ice (KSPF)

Lat: 44.48°NLon: 103.78°WElev: 3898ft.

Overcast and Breezy

36°F

2°C

Humidity	65%
Wind Speed	NW 23 G 32 mph
Barometer	29.95 in
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Wind Chill	24°F (-4°C)
Last update	9 Dec 7:35 pm MST

More Information:

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

Extended Forecast for

3 Miles WNW Whitewood SD

High Wind Warning December 9, 07:46pm until December 10, 02:00am

Click here for hazard details and duration

High Wind Warning

High Wind Warning December 9, 07:46pm until December 10, 02:00am
NOW until 2:00am Wed
High Wind Warning
Tonight
Low: 28 °F
Breezy.
Slight Chance
Snow then
Increasing
Clouds
Wednesday
High: 46 °F
Snow Likely
then
Rain/Snow
Likely
Wednesday Night
Low: 38 °F⇑
Rain Likely
Thursday
High: 53 °F⇓
Chance Rain
then Rain and
Breezy
Thursday Night
Low: 18 °F
Rain/Snow
then Snow
Likely
Friday
High: 22 °F⇓
Snow
Friday Night
Low: 7 °F
Snow Likely
Saturday
High: 18 °F
Chance Snow

Detailed Forecast

Tonight

A 20 percent chance of snow before 10pm. Increasing clouds, with a low around 28. Wind chill values as low as 20. Breezy, with a west wind 21 to 26 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 44 mph.

Wednesday

Snow likely before 1pm, then snow likely, possibly mixed with rain between 1pm and 4pm, then rain likely after 4pm. Cloudy, with a high near 46. Wind chill values as low as 19 early. West wind 6 to 10 mph becoming east in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Wednesday Night

Rain likely, mainly before 11pm. Cloudy, with a temperature rising to around 48 by 4am. West wind 11 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

Thursday

Rain, mainly after 5pm. Temperature rising to near 53 by 11am, then falling to around 43 during the remainder of the day. Breezy, with a west wind 16 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 80%.

Thursday Night

Rain before 9pm, then snow. Low around 18. Northwest wind 15 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Friday

Snow. Temperature falling to around 18 by 5pm. North wind 8 to 11 mph becoming east in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Friday Night

Snow likely. Cloudy, with a low around 7. East wind 7 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 70%.

Saturday

A chance of snow, mainly before 11am. Mostly cloudy, with a high near 18. North wind around 8 mph, with gusts as high as 16 mph.

Saturday Night

Partly cloudy, with a low around 8.

Sunday

Mostly sunny, with a high near 42.

Sunday Night

Partly cloudy, with a low around 28.

Monday

Mostly sunny, with a high near 46.