Flood Warning Washington | Effective 03/20/2026 19:58

Headline: 
Flood Warning issued March 20 at 7:58PM PDT until March 22 at 3:24AM PDT by NWS Seattle WA
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
March 20, 2026 - 7:58pm
Expires: 
March 21, 2026 - 4:00am
Description: 
...The Flood Warning is extended for the following rivers in Washington... Snohomish River Near Monroe affecting Snohomish County. * WHAT...Major flooding is occurring and major flooding is forecast. * WHERE...Snohomish River near Monroe. * WHEN...Until early Sunday morning. * IMPACTS...At 17.0 feet, the Snohomish River will cause major flooding...inundating farm land...roads...and some residential areas. Levees will likely suffer damage. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Snohomish River Basin. A stage of 17 feet at this location corresponds to Phase 2 in the Snohomish County Flood Warning System. * ADDITIONAL DETAILS... - At 7:15 PM PDT Friday the stage was 17.7 feet. - Flood stage is 15.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:15 PM PDT Friday was 17.7 feet. - Forecast...The river is expected to rise and to crest in major flood stage around 18.3 feet tonight. The river will then slowly recede and be below flood stage by Saturday evening. It will then further recede on Sunday. - Flood History...This crest compares to a previous crest of 18.0 feet on 02/16/1982. - http://www.weather.gov/safety/flood
Instruction: 
Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Additional information is available at www.weather.gov. The next statement will be issued by late tonight at 400 AM PDT.
Area Description: 
Snohomish, WA
Forcast Office: 
NWS Seattle WA