Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Flood Watch in effect from December 8, 04:00 AM PST until December 12, 04:00 AM PST

Current conditions at

CANYON CREEK (CYFW1)

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

43°F

6°C

Humidity	100%
Wind Speed	SE 4 MPH
Barometer	NA
Dewpoint	43°F (6°C)
Visibility	NA
Wind Chill	41°F (5°C)
Last update	07 Dec 07:52 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 8, 04:00am until December 12, 04:00am

Click here for hazard details and duration

Flood Watch

Tonight
Low: 32 °F
Snow Showers
Likely and
Breezy
Monday
High: 37 °F
Rain/Snow and
Windy then
Heavy Rain
and Very
Windy
Monday Night
Low: 30 °F
Rain/Snow and
Very Windy
Tuesday
High: 39 °F
Heavy Snow
then
Rain/Snow
Tuesday Night
Low: 35 °F
Rain/Snow and
Very Windy
Wednesday
High: 40 °F
Rain/Snow and
Windy
Wednesday Night
Low: 36 °F
Rain/Snow and
Breezy
Thursday
High: 39 °F
Rain/Snow
Thursday Night
Low: 38 °F
Rain/Snow
Likely

Detailed Forecast

Tonight

Snow showers likely, mainly between 10pm and midnight. Mostly cloudy, with a low around 32. Breezy, with a west southwest wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.

Monday

Rain, possibly mixed with snow showers before 10am, then rain. The rain could be heavy at times. Snow level 7300 feet rising to 8200 feet in the afternoon. High near 37. Very windy, with a southwest wind 21 to 30 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Monday Night

Snow, possibly mixed with rain. The rain and snow could be heavy at times. Snow level 7600 feet lowering to 6200 feet after midnight . Low around 30. Very windy, with a southwest wind 28 to 33 mph, with gusts as high as 49 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Tuesday

Snow before 1pm, then snow, possibly mixed with rain. The snow could be heavy at times. High near 39. West southwest wind 7 to 10 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

Tuesday Night

Rain and snow before 7pm, then rain between 7pm and 1am, then rain, possibly mixed with snow after 1am. The rain could be heavy at times. Snow level 8000 feet. Low around 35. Very windy, with a west southwest wind 21 to 30 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Wednesday

Rain and snow. The rain could be heavy at times. Snow level 7200 feet. High near 40. Windy. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday Night

Rain, possibly mixed with snow. The rain could be heavy at times. Snow level 7400 feet. Low around 36. Breezy. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday

Rain, possibly mixed with snow. Snow level 7700 feet. Mostly cloudy, with a high near 39.

Thursday Night

Rain likely, possibly mixed with snow, mainly before 10pm. Snow level 7600 feet. Mostly cloudy, with a low around 38.

Friday

A chance of rain. Snow level 7100 feet. Mostly cloudy, with a high near 39.

Friday Night

A chance of rain and snow. Snow level 6800 feet. Mostly cloudy, with a low around 33.

Saturday

Rain and snow likely. Snow level 6400 feet. Partly sunny, with a high near 37.

Saturday Night

Snow likely. Mostly cloudy, with a low around 34.