All Weather News

River Flooding Update for the Pacific Northwest

29 Nov 2021, 6:20 pm

The past 7 days have brought heavy rain totals across the Pacific Northwest.

Rainfall Threat

Rivers look to be cresting – not at historic levels like earlier this month – but generally high due to more heavy rain. An excessive risk for rainfall has been issued around the I-5 corridor by the Weather Prediction Center (WPC) as heavy rain will return to the region on Tuesday. Until then, conditions are expected to temporarily dry out.


Another slug of moisture will be channeled onshore Tuesday morning, mainly impacting the state of Washington.

Conditions will improve slight by Tuesday evening as the best support for widespread precipitation heads to the north. Scattered rain and snow will will linger from Washington to Montana into Wednesday .

In terms of rainfall, a system total of 1 – 4″ across the Olympic Peninsula and areas east of the I-5 corridor. Lesser totals across the state, into Oregon and also Idaho will be in the 1 – 3″ range.

River Flooding

As a result of the incoming rain, a number or river level gauges are forecast to get to near, minor, and even moderate flood stage. Unfortunately one of those rivers that will likely get close to even major flood stage will be the Skagit River near Mt. Vernon, Washington.

The crest of the Skagit River at Mt. Vernon, Washington is expected to be Monday, only two feet below major flood stage.

Next week

The long range forecast keeps the Northwest wet with above average precipitation in the forecast for next week.

For more, join us for your western regional forecast :50 past the hour on WeatherNation.

About the author
Erik Kostrzewa was born and raised in the state of Michigan; spending much of his life in the suburbs of Detroit. Erik attended the University of Michigan and earned a Bachelor’s Degr... Load Moreee in Earth Systems Science and Engineering with a concentration in Meteorology. His first on-air job was straight out of college in Lansing, Michigan at WLNS-TV. After a few years, he moved an hour west to Grand Rapids to continue his career at FOX17 news. While in the heart of the lower peninsula, Erik covered a wide variety of challenging weather from lake-effect snow to derechos. Erik definitely has an interesting last name which comes from his Polish descent. If you are wondering how it is pronounced, the easiest way to say it is “Ka-Stree-Va”. Erik is thrilled to forecast on a national scale at WeatherNation and experience an even wider range of weather in Colorado! He is also looking forward to experiencing his first 14er on one of the many mountains in the state. Follow Erik on Twitter and Facebook!