WGUS46 KSEW 121801

FLWSEW



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Flood Warning

National Weather Service Seattle WA

1001 AM PST Fri Dec 12 2025



...The National Weather Service in Seattle WA has issued a Flood 

Warning for the following rivers in Washington...



  Cowlitz River Below Mayfield Dam affecting Lewis County.



.Dam operations to reduce the flood pool behind Mayfield Dam will 

increase the flow levels below the dam.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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

deaths occur in vehicles.



Motorists should not attempt to drive around barricades or drive 

cars through flooded areas.



Even 6 inches of fast-moving flood water can knock you off your feet 

and a depth of 2 feet will float your car. Never try to walk, swim, 

or drive through such swift water. If you come upon flood waters, 

stop, turn around and go another way.



Additional information is available at www.weather.gov.



The next statement will be issued by this evening at 715 PM PST.



&&



WAC041-130315-

/O.NEW.KSEW.FL.W.0060.251212T2350Z-000000T0000Z/

/MAYW1.1.ER.251212T2350Z.251216T0617Z.000000T0000Z.NO/

1001 AM PST Fri Dec 12 2025



...FLOOD WARNING IN EFFECT FROM THIS AFTERNOON UNTIL FURTHER 

NOTICE...



* WHAT...Minor flooding is forecast.



* WHERE...Cowlitz River below Mayfield Dam.



* WHEN...From this afternoon until further notice.



* IMPACTS...At 25,000.0 cfs, the Cowlitz River will flood the reach 

  from Mayfield Dam downstream through Toledo. Flood waters will 

  inundate some farmlands and several roads...mainly near Toledo.



* ADDITIONAL DETAILS...

  - At 8:45 AM PST Friday the flow was 23,300.0 cfs.

  - Flood flow is 25,000.0 cfs.

  - Forecast...The river will rise to 25,000 cfs this afternoon

    then fluctuate near flood flow of 25,000 cfs through the

    weekend.

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



&&



LAT...LON 4646 12260 4642 12278 4639 12290 4639 12300

      4650 12280 4655 12260





$$



JBB