WGUS46 KSEW 210012

FLWSEW



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Flood Warning

National Weather Service Seattle WA

512 PM PDT Fri Mar 20 2026



WAC073-211200-

/O.NEW.KSEW.FA.W.0001.260321T0012Z-260321T1200Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

Whatcom WA-

512 PM PDT Fri Mar 20 2026



...FLOOD WARNING IN EFFECT UNTIL 5 AM PDT SATURDAY...



* 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



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Turn around, don't drown when encountering flooded roads. Most flood 

deaths occur in vehicles.



&&



LAT...LON 4896 12235 4896 12231 4891 12233 4892 12237

      4894 12236





$$



JD