Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Hazardous Weather Conditions

Flood Watch in effect from December 8, 10:00 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	SE 7 MPH
Barometer	NA
Dewpoint	45°F (7°C)
Visibility	NA
Wind Chill	41°F (5°C)
Last update	08 Dec 04:52 AM PST

More Information:

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

Extended Forecast for

6 Miles SSE Mount St Helens WA

Flood Watch December 8, 10:00am until December 12, 04:00am

Click here for hazard details and duration

Flood Watch

Overnight
Low: 40 °F
Chance Rain
Monday
High: 46 °F
Heavy Rain
and Breezy
Monday Night
Low: 37 °F
Heavy Rain
and Windy
Tuesday
High: 47 °F
Rain/Snow
Tuesday Night
Low: 43 °F
Heavy Rain
and Breezy
Wednesday
High: 47 °F
Heavy Rain
and Breezy
Wednesday Night
Low: 44 °F
Heavy Rain
Thursday
High: 47 °F
Rain
Thursday Night
Low: 44 °F
Rain Likely

Detailed Forecast

Overnight

A 50 percent chance of rain. Mostly cloudy, with a low around 40. Southwest wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.

Monday

Rain. The rain could be heavy at times. High near 46. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Monday Night

Rain. The rain could be heavy at times. Low around 37. Windy, with a southwest wind 18 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Tuesday

Rain before 10am, then rain, possibly mixed with snow between 10am and 1pm, then rain after 1pm. Snow level 4800 feet rising to 7500 feet in the afternoon. High near 47. North wind around 7 mph becoming east southeast in the afternoon. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tuesday Night

Rain. The rain could be heavy at times. Low around 43. Breezy, with a southwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Wednesday

Rain. The rain could be heavy at times. High near 47. Breezy. Chance of precipitation is 100%.

Wednesday Night

Rain. The rain could be heavy at times. Low around 44. Chance of precipitation is 90%.

Thursday

Rain. Cloudy, with a high near 47.

Thursday Night

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

Friday

A chance of rain. Partly sunny, with a high near 48.

Friday Night

A slight chance of rain. Mostly cloudy, with a low around 40.