WGUS46 KSEW 201717

FLWSEW



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Flood Warning

National Weather Service Seattle WA

1017 AM PDT Fri Mar 20 2026



...Forecast flooding changed from Moderate to Major severity and 

increased in duration for the following rivers in Washington...



  Snohomish River At Snohomish affecting Snohomish County.



.Rain will continue into the early afternoon before tapering off, 

but the river will still experience elevated flows.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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.



Additional information is available at www.weather.gov.



The next statement will be issued by this evening at 630 PM PDT.



&&



WAC061-210130-

/O.EXT.KSEW.FL.W.0019.000000T0000Z-260322T2317Z/

/SNAW1.3.ER.260319T0019Z.260321T0600Z.260322T0817Z.NO/

1017 AM PDT Fri Mar 20 2026



...FLOOD WARNING NOW IN EFFECT UNTIL SUNDAY AFTERNOON...



* WHAT...Moderate flooding is occurring and major flooding is 

  forecast.



* WHERE...Snohomish River at Snohomish.



* WHEN...Until Sunday afternoon.



* IMPACTS...At 30.0 feet, the Snohomish River will flood low farm 

  lands and several roads...including Riverview Rd and the 

  Snohomish-Monroe highway. Hide tidal levels could worsen flooding 

  on the lower delta and Ebey Island. Levees may be damaged.  Berms 

  start overtopping at this level.  Flooding will occur all along 

  the river including headwaters...tributaries...and other streams 

  within and near the Snohomish River Basin.  This stage on the 

  Snohomish River corresponds to a Phase 4 in the Snohomish County 

  flood program.



* ADDITIONAL DETAILS...

  - At 9:00 AM PDT Friday the stage was 28.0 feet.

  - Flood stage is 25.0 feet.

  - Recent Activity...The maximum river stage in the 24 hours

    ending at 9:00 AM PDT Friday was 28.0 feet.

  - Forecast...The river will rise to 30.5 feet late tonight. It

    will then fall below flood stage early Sunday morning to 18.4

    feet Monday morning. It will rise to 18.6 feet late Monday

    morning. It will then fall to 16.0 feet Monday evening.

  - Flood History...This crest compares to a previous crest of

    30.4 feet on 01/17/1974.

  - http://www.weather.gov/safety/flood



&&



LAT...LON 4786 12217 4789 12221 4796 12232 4809 12216

      4794 12213 4791 12203





$$



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