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.

44°F

7°C

Humidity	93%
Wind Speed	W 9 MPH
Barometer	NA
Dewpoint	42°F (6°C)
Visibility	NA
Wind Chill	39°F (4°C)
Last update	07 Dec 07:25 PM PST

More Information:

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

Extended Forecast for

8 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

Tonight
Low: 38 °F
Showers
Likely
Monday
High: 46 °F
Heavy Rain
and Breezy
Monday Night
Low: 36 °F
Rain/Snow and
Breezy
Tuesday
High: 44 °F
Rain/Snow
Tuesday Night
Low: 39 °F
Heavy Rain
and Breezy
Wednesday
High: 45 °F
Heavy Rain
Wednesday Night
Low: 42 °F
Heavy Rain
Thursday
High: 46 °F
Rain
Thursday Night
Low: 43 °F
Rain Likely

Detailed Forecast

Tonight

Showers likely before 4am, then a chance of showers after 5am. Snow level 5000 feet. Mostly cloudy, with a low around 38. South southwest wind 6 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Monday

Showers, mainly before 10am, then rain after 10am. The rain could be heavy at times. High near 46. Breezy, with a south southwest wind 9 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

Monday Night

Rain before 10pm, then rain, possibly mixed with snow between 10pm and 4am, then rain after 4am. The rain could be heavy at times. Low around 36. Breezy, with a west southwest wind 13 to 18 mph, with gusts as high as 34 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 4400 feet rising to 6200 feet in the afternoon. High near 44. South wind around 6 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tuesday Night

Rain. The rain could be heavy at times. Low around 39. Breezy, with a west southwest wind 11 to 16 mph, with gusts as high as 26 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 45. Chance of precipitation is 100%.

Wednesday Night

Rain. The rain could be heavy at times. Low around 42. Chance of precipitation is 90%.

Thursday

Rain. Mostly cloudy, with a high near 46.

Thursday Night

Rain likely, mainly before 10pm. Mostly cloudy, with a low around 43.

Friday

A chance of rain. Mostly cloudy, with a high near 49.

Friday Night

A chance of rain. Mostly cloudy, with a low around 38.