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

Current conditions at

Stampede Pass (KSMP)

Lat: 47.27648°NLon: 121.33817°WElev: 3970.0ft.

Mist

37°F

3°C

Humidity	100%
Wind Speed	W 8 MPH
Barometer	30.08 in (1018.63 mb)
Dewpoint	37°F (3°C)
Visibility	1.25 mi
Wind Chill	31°F (-1°C)
Last update	08 Dec 03:12 AM PST

More Information:

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

Extended Forecast for

8 Miles S Snoqualmie Pass WA

Flood Watch December 8, 07:00am until December 12, 07:00am

Click here for hazard details and duration

Flood Watch

Overnight
Low: 37 °F
Chance Rain
Monday
High: 45 °F
Heavy Rain
Monday Night
Low: 34 °F
Heavy Rain
then
Rain/Snow
Tuesday
High: 40 °F
Rain/Snow
Tuesday Night
Low: 36 °F
Heavy Rain
Wednesday
High: 45 °F
Heavy Rain
Wednesday Night
Low: 41 °F
Heavy Rain
Thursday
High: 44 °F
Rain
Thursday Night
Low: 42 °F
Rain

Detailed Forecast

Overnight

A 50 percent chance of rain. Cloudy, with a low around 37. West wind around 13 mph, with gusts as high as 30 mph. New precipitation amounts between a tenth and quarter of an inch possible.

Monday

Rain, mainly after 7am. The rain could be heavy at times. High near 45. Southwest wind 7 to 13 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

Monday Night

Rain before 1am, then rain, possibly mixed with snow. The rain could be heavy at times. Low around 34. West wind around 15 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

Tuesday

Rain and snow. High near 40. West wind 5 to 7 mph becoming calm in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Tuesday Night

Rain. The rain could be heavy at times. Low around 36. South wind 5 to 9 mph becoming west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 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 41. Chance of precipitation is 90%.

Thursday

Rain. High near 44. Chance of precipitation is 90%.

Thursday Night

Rain. Low around 42. Chance of precipitation is 80%.

Friday

A chance of rain. Mostly cloudy, with a high near 46.

Friday Night

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