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

Flood Watch until December 11, 04:00 PM PST

Current conditions at

CANYON CREEK (CYFW1)

Lat: 45.92944°NLon: 122.20278°WElev: 2592.0ft.

46°F

8°C

Humidity	100%
Wind Speed	SSE 5 MPH
Barometer	NA
Dewpoint	46°F (8°C)
Visibility	NA
Wind Chill	44°F (7°C)
Last update	09 Dec 05:52 PM PST

More Information:

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

Extended Forecast for

Mount St Helens WA

Flood Watch December 9, 06:20pm until December 11, 04:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch December 9, 06:20pm until December 11, 04:00pm
NOW until 4:00pm Thu
Flood Watch
Tonight
Low: 35 °F⇑
Heavy Rain
and Very
Windy
Wednesday
High: 40 °F
Heavy Rain
and Very
Windy
Wednesday Night
Low: 37 °F
Heavy Rain
and Windy
Thursday
High: 39 °F
Rain and
Breezy then
Rain/Snow
Thursday Night
Low: 37 °F
Rain/Snow
Friday
High: 40 °F
Rain/Snow
Likely
Friday Night
Low: 35 °F
Chance
Rain/Snow
Saturday
High: 38 °F
Chance
Rain/Snow

Detailed Forecast

Tonight

Rain. The rain could be heavy at times. Temperature rising to around 39 by 10pm. Very windy, with a southwest wind 14 to 19 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 47 mph. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.

Wednesday

Rain. The rain could be heavy at times. High near 40. Very windy, with a west southwest wind 24 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Wednesday Night

Rain. The rain could be heavy at times. Low around 37. Windy, with a west southwest wind around 26 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Thursday

Rain before 1pm, then rain, possibly mixed with snow. Snow level 8000 feet lowering to 7400 feet in the afternoon . High near 39. Breezy, with a west northwest wind 9 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Thursday Night

Rain, possibly mixed with snow before 7pm, then rain between 7pm and 4am, then rain likely, possibly mixed with snow after 4am. Snow level 7600 feet lowering to 7000 feet after midnight . Low around 37. West wind around 8 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Friday

Rain and snow likely, becoming all rain after 1pm. Snow level 6200 feet rising to 6800 feet in the afternoon. Mostly cloudy, with a high near 40. Chance of precipitation is 60%. Little or no snow accumulation expected.

Friday Night

A chance of rain before 7pm, then a chance of rain and snow. Snow level 6500 feet. Mostly cloudy, with a low around 35. Chance of precipitation is 40%. Little or no snow accumulation expected.

Saturday

A chance of rain and snow, mainly after 10am. Snow level 6400 feet. Partly sunny, with a high near 38.

Saturday Night

Snow, possibly mixed with rain. Snow level 6300 feet. Mostly cloudy, with a low around 32.

Sunday

Snow, possibly mixed with rain, becoming all snow after 10am. Mostly cloudy, with a high near 34.

Sunday Night

Snow, possibly mixed with rain. Snow level 6100 feet. Mostly cloudy, with a low around 31. Breezy.

Monday

Rain and snow. The rain could be heavy at times. Snow level 6800 feet. Cloudy, with a high near 35. Breezy.

Monday Night

Rain and snow. The rain and snow could be heavy at times. Cloudy, with a low around 32. Windy.