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

Sidney-Richland (KSDY)

Lat: 47.7°NLon: 104.2°WElev: 1985.0ft.

Clear

30°F

-1°C

Humidity	80%
Wind Speed	NW 23 MPH
Barometer	29.87 in (1011.51 mb)
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Wind Chill	17°F (-8°C)
Last update	09 Dec 07:05 PM MST

More Information:

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

Extended Forecast for

Lambert MT

Winter Weather Advisory December 10, 04:00am until December 11, 08:00pm

High Wind Warning December 9, 07:24pm until December 9, 08:00pm

Click here for hazard details and duration

Winter Weather Advisory

...

High Wind Warning December 9, 07:24pm until December 9, 08:00pm
NOW until 8:00pm Tue
High Wind Warning
Tonight
Low: 11 °F
Increasing
Clouds
Wednesday
High: 26 °F
Slight Chance
Snow then
Snow
Wednesday Night
Low: 23 °F⇑
Wintry Mix
Likely and
Patchy
Freezing Fog
Thursday
High: 34 °F
Rain/Snow
Likely then
Snow Likely
and Patchy
Freezing Fog
Thursday Night
Low: -8 °F
Chance Snow
and Patchy
Freezing Fog
then Cloudy
Friday
High: 0 °F
Slight Chance
Snow
Friday Night
Low: -13 °F
Snow
Saturday
High: 1 °F
Chance Snow
then Partly
Sunny

Detailed Forecast

Tonight

Increasing clouds, with a low around 11. Northwest wind 8 to 16 mph, with gusts as high as 26 mph.

Wednesday

Snow, mainly after 2pm. High near 26. Light and variable wind becoming southeast 11 to 16 mph in the morning. Winds could gust as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Wednesday Night

Snow and freezing rain likely before 8pm, then freezing rain likely between 8pm and 4am, then rain likely after 4am. Patchy freezing fog after 8pm. Cloudy, with a temperature rising to around 32 by 4am. Southeast wind 7 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 70%. New ice accumulation of less than a 0.1 of an inch possible. New snow accumulation of less than a half inch possible.

Thursday

Rain and snow likely, becoming all snow after 7am. Patchy freezing fog after 5pm. Cloudy, with a high near 34. North northwest wind 7 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

Thursday Night

A 30 percent chance of snow before 11pm. Patchy freezing fog before 8pm. Cloudy, with a low around -8. North northwest wind 14 to 17 mph, with gusts as high as 29 mph. New snow accumulation of less than a half inch possible.

Friday

A 20 percent chance of snow after 11am. Cloudy and cold, with a high near 0. Northwest wind 7 to 10 mph.

Friday Night

Snow. Low around -13. Northeast wind around 6 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

Saturday

A 30 percent chance of snow before 11am. Mostly cloudy, with a high near 1. North northeast wind 5 to 7 mph becoming west southwest in the afternoon.

Saturday Night

Mostly cloudy, with a low around -14. Southeast wind around 6 mph.

Sunday

Partly sunny, with a high near 29. Southeast wind 6 to 11 mph.

Sunday Night

Partly cloudy, with a low around 7. Southwest wind 6 to 10 mph becoming west northwest after midnight.