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

DRY CRK (DCCW1)

Lat: 45.94361°NLon: 121.9875°WElev: 2697.0ft.

43°F

6°C

Humidity	100%
Wind Speed	ESE 3 MPH
Barometer	NA
Dewpoint	43°F (6°C)
Visibility	NA
Last update	07 Dec 11:25 AM PST

More Information:

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

Extended Forecast for

5 Miles NE 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: 42 °F
Rain
Tonight
Low: 39 °F
Chance Rain
then Rain
Likely
Monday
High: 45 °F
Heavy Rain
and Breezy
Monday Night
Low: 35 °F
Heavy Rain
and Windy
then
Rain/Snow and
Breezy
Tuesday
High: 42 °F
Rain/Snow
Tuesday Night
Low: 37 °F
Heavy Rain
and Breezy
Wednesday
High: 44 °F
Rain/Snow and
Breezy
Wednesday Night
Low: 35 °F
Rain/Snow
Thursday
High: 41 °F
Rain/Snow
Likely

Detailed Forecast

This Afternoon

Rain. High near 42. West wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Tonight

Rain likely, mainly after midnight. Snow level 5300 feet. Mostly cloudy, with a low around 39. West southwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

Monday

Rain. The rain could be heavy at times. High near 45. Breezy, with a south southwest wind 11 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Monday Night

Rain before 4am, then rain, possibly mixed with snow. The rain could be heavy at times. Snow level 7700 feet lowering to 5600 feet after midnight . Low around 35. Windy, with a southwest wind 16 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tuesday

Rain, possibly mixed with snow. Snow level 4600 feet rising to 5600 feet in the afternoon. High near 42. West southwest wind around 8 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tuesday Night

Rain. The rain could be heavy at times. Low around 37. Breezy. Chance of precipitation is 100%.

Wednesday

Rain before 10am, then rain, possibly mixed with snow. High near 44. Breezy. Chance of precipitation is 100%. Little or no snow accumulation expected.

Wednesday Night

Rain, possibly mixed with snow. Mostly cloudy, with a low around 35.

Thursday

Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 41.

Thursday Night

Rain and snow likely, mainly before 10pm. Mostly cloudy, with a low around 38.

Friday

A chance of rain. Mostly cloudy, with a high near 45.

Friday Night

A chance of rain. Mostly cloudy, with a low around 39.

Saturday

A chance of rain. Partly sunny, with a high near 45.