WGUS46 KSEW 121753

FLWSEW



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Flood Warning

National Weather Service Seattle WA

953 AM PST Fri Dec 12 2025



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

Warning for the following rivers in Washington...



  White River Near Mud Mtn. Dam Outflow affecting King and Pierce 

  Counties.



.Dam operations to reduce the flood pool behind Mud Mountain Dam is 

increasing the flow levels below the dam.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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.



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 745 PM PST.



&&



WAC033-053-130345-

/O.NEW.KSEW.FL.W.0059.251212T1753Z-000000T0000Z/

/MMRW1.1.ER.251212T1550Z.251212T1700Z.000000T0000Z.UU/

953 AM PST Fri Dec 12 2025



...FLOOD WARNING IN EFFECT FROM THIS MORNING UNTIL FURTHER NOTICE...



* WHAT...Minor flooding is occurring.



* WHERE...White River near Mud Mtn. Dam Outflow.



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



* IMPACTS...At 8,000.0 cfs, the White River will spill over its 

  banks below Mud Mountain Dam producing high water that will 

  encroach on roads and residences, particularly in the Red Creek 

  area. 8000 cfs on the White River is within phase 3 flood in the 

  King County flood system.



* ADDITIONAL DETAILS...

  - At 9:00 AM PST Friday the flow was 9,100.0 cfs.

  - Flood flow is 9,000.0 cfs.

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

    ending at 9:00 AM PST Friday was 9,100.0 cfs.

  - Forecast...The river is expected to rise to and continue at

    flood flow through the weekend.

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



&&



LAT...LON 4709 12192 4722 12217 4716 12220 4720 12234

      4733 12224 4721 12191





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JBB