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.

45°F

7°C

Humidity	100%
Wind Speed	NW 2 MPH
Barometer	NA
Dewpoint	45°F (7°C)
Visibility	NA
Last update	07 Dec 02:52 PM PST

More Information:

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

Extended Forecast for

3 Miles E Mount St Helens WA

Flood Watch December 8, 04:00am until December 12, 04:00am

Click here for hazard details and duration

Flood Watch

This Afternoon
High: 41 °F
Showers
Tonight
Low: 38 °F
Showers
Likely
Monday
High: 44 °F
Heavy Rain
and Breezy
Monday Night
Low: 35 °F
Heavy Rain
and Windy
then
Rain/Snow and
Breezy
Tuesday
High: 44 °F
Rain/Snow
Tuesday Night
Low: 40 °F
Heavy Rain
and Breezy
Wednesday
High: 44 °F
Heavy Rain
Wednesday Night
Low: 41 °F
Heavy Rain
Thursday
High: 45 °F
Rain

Detailed Forecast

This Afternoon

Showers, mainly after 4pm. High near 41. West southwest wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Tonight

Showers likely, mainly before midnight. Snow level 5000 feet. Mostly cloudy, with a low around 38. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

Monday

Showers, mainly before 10am, then rain after 10am. The rain could be heavy at times. High near 44. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.

Monday Night

Rain before 1am, then rain, possibly mixed with snow between 1am and 4am, then rain after 4am. The rain could be heavy at times. Low around 35. Windy, with a west southwest wind 16 to 22 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tuesday

Rain before 7am, then rain, possibly mixed with snow between 7am and 1pm, then rain after 1pm. Snow level 4700 feet rising to 6400 feet in the afternoon. High near 44. Southwest wind around 6 mph becoming north in the morning. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tuesday Night

Rain. The rain could be heavy at times. Low around 40. Breezy. Chance of precipitation is 100%.

Wednesday

Rain. The rain could be heavy at times. High near 44. Chance of precipitation is 100%.

Wednesday Night

Rain. The rain could be heavy at times. Cloudy, with a low around 41.

Thursday

Rain. Mostly cloudy, with a high near 45.

Thursday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 44.

Friday

A chance of rain. Mostly cloudy, with a high near 46.