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	SE 13 MPH
Barometer	NA
Dewpoint	48°F (9°C)
Visibility	NA
Wind Chill	43°F (6°C)
Last update	08 Dec 12:52 PM PST

More Information:

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

Extended Forecast for

2 Miles ENE 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: 40 °F
Heavy Rain
and Windy
Tonight
Low: 32 °F
Heavy Rain
and Very
Windy then
Rain/Snow and
Windy
Tuesday
High: 41 °F
Rain/Snow
Tuesday Night
Low: 37 °F
Heavy Rain
and Windy
Wednesday
High: 43 °F
Rain/Snow and
Windy
Wednesday Night
Low: 39 °F
Rain and
Breezy
Thursday
High: 42 °F
Rain/Snow
Thursday Night
Low: 40 °F
Rain/Snow
Likely

Detailed Forecast

This Afternoon

Rain. The rain could be heavy at times. High near 40. 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 1 and 2 inches possible.

Tonight

Snow, possibly mixed with rain, becoming all snow after 5am. The rain could be heavy at times. Snow level 8100 feet lowering to 6000 feet after midnight . Low around 32. Very windy, with a southwest wind 22 to 32 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

Tuesday

Rain and snow, becoming all rain after 1pm. Snow level rising to 8600 feet in the afternoon. High near 41. West northwest wind 6 to 9 mph becoming south southwest in the afternoon. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Tuesday Night

Rain. The rain could be heavy at times. Low around 37. Windy, with a southwest wind 16 to 26 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.

Wednesday

Rain before 10am, then rain, possibly mixed with snow. The rain could be heavy at times. High near 43. Windy, with a southwest wind 18 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday Night

Rain. Low around 39. Breezy. Chance of precipitation is 100%.

Thursday

Rain, possibly mixed with snow. Snow level 6900 feet rising to 7600 feet in the afternoon. High near 42. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night

Rain likely, possibly mixed with snow, mainly before 10pm. Snow level 7100 feet. Mostly cloudy, with a low around 40.

Friday

A chance of rain. Snow level 6900 feet. Mostly cloudy, with a high near 41.

Friday Night

A slight chance of rain. Snow level 6600 feet. Mostly cloudy, with a low around 36.

Saturday

A chance of rain. Snow level 6300 feet. Partly sunny, with a high near 39.

Saturday Night

Rain and snow likely. Snow level 5900 feet. Mostly cloudy, with a low around 34.

Sunday

Snow, possibly mixed with rain. Mostly cloudy, with a high near 35.