től: 2026.03.20., 17:12
nek: 2026.03.21., 05:00

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...A portion of northwest Washington, including the following county, Whatcom.

* WHEN...Until 500 AM PDT Saturday.

* IMPACTS...Nooksack River overflow flooding at Everson is imminent or occurring along an abandoned Nooksack River side channel, including Johnson Creek, from Everson northwards.

* ADDITIONAL DETAILS... - At 454 PM PDT, Stream gauge and river forecasts for the Nooksack River at North Cedarville and at Everson is expected into tonight in Everson, at a sufficient level to spill into an abandoned Nooksack River side channel, including Johnson Creek; the split flow will send flood waters flowing from Everson northwards but remaining south of Sumas. - Some locations that will experience flooding include... Everson and Nooksack. - http://www.weather.gov/safety/flood

től: 2026.03.20., 18:50
nek: 2026.03.21., 08:00

* WHAT...Flooding caused by excessive rainfall continues to be possible.

* WHERE...Portions of northwest and west central Washington, including the following counties, in northwest Washington, Skagit and Whatcom. In west central Washington, King and Snohomish.

* WHEN...Through Saturday afternoon.

* IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS... - Area rivers will still be rising into Saturday, with multiple rivers cresting over the weekend. - http://www.weather.gov/safety/flood

től: 2026.03.20., 12:16
nek: 2026.03.21., 17:00

Rainfall amounts of 2 to 9 inches over the past 3 days has increased soil moisture to high levels across western Washington. This amount of rain that has been observed will continue to put extra pressure on soil instability, leading to an increased threat of landslides and debris flows, especially from recent burned areas.

Over the last couple days multiple slides have been reported across locations of western Washington. More landslides are possible.

Areas most susceptible to landslides debris flows under these conditions are steep coastal bluffs, other steep hillsides or road cuts, and recent burned areas. A diminishing threat of landslides and debris flows will continue over the weekend after the rain ends.

For more information about current conditions, visit www.weather.gov/seattle, select Hydrology, and then scroll down for the links to the landslide information pages.

For more information on landslides, visit the website for the Washington State Department of Natural Resources landslide geologic hazards at: http://bit.ly/2mtA3wn