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

Winter Weather Advisory in effect from December 10, 12:00 AM MST until December 10, 11:00 AM MST

Current conditions at

Helmville MT-200 MP 53.3 (MTHLM)

Lat: 46.96826°NLon: 112.97487°WElev: 4199.0ft.

29°F

-2°C

Humidity	89%
Wind Speed	N 2 MPH
Barometer	NA
Dewpoint	26°F (-3°C)
Visibility	NA
Last update	09 Dec 11:30 PM MST

More Information:

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

Extended Forecast for

14 Miles NNE Ovando MT

Winter Weather Advisory December 10, 12:00am until December 10, 11:00am

Click here for hazard details and duration

Winter Weather Advisory

Tonight
Low: 23 °F
Heavy Snow
Wednesday
High: 37 °F
Rain/Snow
Wednesday Night
Low: 35 °F
Rain/Snow and
Breezy
Thursday
High: 35 °F
Rain/Snow and
Breezy then
Heavy Snow
Thursday Night
Low: 29 °F
Heavy Snow
Friday
High: 34 °F
Heavy Snow
then
Rain/Snow
Friday Night
Low: 26 °F
Rain/Snow
Likely then
Snow Likely
Saturday
High: 30 °F
Chance Snow
Saturday Night
Low: 26 °F
Slight Chance
Snow

Detailed Forecast

Tonight

Snow, mainly after midnight. The snow could be heavy at times. Low around 23. Southwest wind 7 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 7 inches possible.

Wednesday

Rain and snow. The snow could be heavy at times. Snow level rising to 8100 feet in the afternoon. High near 37. West southwest wind around 18 mph, with gusts as high as 48 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

Wednesday Night

Rain and snow, becoming all snow after 5am. Snow level 7800 feet lowering to 7100 feet after midnight . Low around 35. Breezy, with a west southwest wind 20 to 24 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Thursday

Snow before 8am, then rain and snow between 8am and 11am, then snow after 11am. The snow could be heavy at times. High near 35. Breezy, with a west wind 16 to 24 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Thursday Night

Snow. The snow could be heavy at times. Low around 29. West wind around 14 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

Friday

Snow before 2pm, then snow, possibly mixed with rain. The snow could be heavy at times. High near 34. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

Friday Night

Rain and snow likely, becoming all snow after 8pm. Mostly cloudy, with a low around 26. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.

Saturday

A chance of snow, mainly before 11am. Partly sunny, with a high near 30.

Saturday Night

A slight chance of snow. Mostly cloudy, with a low around 26.

Sunday

A chance of snow, mainly after 11am. Partly sunny, with a high near 34.

Sunday Night

A slight chance of snow. Mostly cloudy, with a low around 28.

Monday

A chance of snow. Partly sunny, with a high near 35.

Monday Night

A chance of snow. Mostly cloudy, with a low around 31.