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.

48°F

9°C

Humidity	100%
Wind Speed	SSE 11 MPH
Barometer	NA
Dewpoint	48°F (9°C)
Visibility	NA
Wind Chill	43°F (6°C)
Last update	08 Dec 11:52 AM PST

More Information:

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

Extended Forecast for

6 Miles NW Mount St Helens WA

Flood Watch until December 12, 04:00am

Click here for hazard details and duration

Flood Watch

Flood Watch until December 12, 04:00am
NOW until 4:00am Fri
Flood Watch
This Afternoon
High: 44 °F
Heavy Rain
and Breezy
Tonight
Low: 34 °F
Windy. Heavy
Rain then
Rain/Snow
Tuesday
High: 45 °F
Rain/Snow
Tuesday Night
Low: 41 °F
Heavy Rain
and Breezy
Wednesday
High: 47 °F
Heavy Rain
and Breezy
Wednesday Night
Low: 44 °F
Rain
Thursday
High: 46 °F
Rain
Thursday Night
Low: 42 °F
Rain Likely

Detailed Forecast

This Afternoon

Rain. The rain could be heavy at times. High near 44. Breezy, with a southwest wind 18 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Tonight

Rain before 3am, then rain, possibly mixed with snow. The rain could be heavy at times. Snow level 8500 feet lowering to 5600 feet after midnight . Low around 34. Windy, with a south southwest wind 18 to 26 mph becoming west after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Tuesday

Rain, possibly mixed with snow. Snow level rising to 7400 feet in the afternoon. High near 45. East southeast wind around 6 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Tuesday Night

Rain. The rain could be heavy at times. Low around 41. Breezy, with a southwest wind 14 to 21 mph, with gusts as high as 32 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, with a southwest wind 13 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Wednesday Night

Rain. Low around 44. Chance of precipitation is 100%.

Thursday

Rain. High near 46. Chance of precipitation is 90%.

Thursday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 42.

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 38.

Saturday

A chance of rain. Partly sunny, with a high near 47.