Grays Harbor County Emergency Alert UPDATE: FLOOD WATCH ALERT In Effect: Monday Morning (12/15/2025) through Thursday Afternoon (12/18/2025). Flooding from heavy rainfall is possible across much of northwest and west central Washington, including Grays Harbor County. Expect:2–8 inches of rain possible through midweek. Grays Harbor County Emergency Alert UPDATE: UPDATE 12/13/2025 2:42 PM: Chehalis River at Porter Event extended (time). Flood Warning in effect until Sunday early afternoon. The river is expected to fall below flood stage late tonight and continue falling to 46.1 feet late Wednesday morning. The river will rise again thereafter. UPDATE 12/13/2025 8:02 AM: Chehalis River above Grand Mound The Flood Warning is cancelled for the Chehalis River Above Grand Mound. At 7:00 AM today (12/13/2025) the stage was 140.4 feet. The river has fallen below flood stage and is expected to fall to 138.3 feet Tuesday (12/16/2025) afternoon