Flood in Washington

Events

589

Deaths

10

Injuries

0

Damage

$603 million

• Debris Flows and Flooding in Washington, December 2 to 5, 20073 deaths · $120 million · 11 eventsRecord flooding occurred on the Chehalis, Skokomish, and Elwha Rivers. In addition to the record flooding, major flooding occurred on the Bogachiel River.
• Flood and Heavy Rain in Washington, January 6 to 11, 20223 deaths · 1 injured · $4.9 million · 3 eventsA strong and persistent upper-level low-pressure system developed over the northern Rockies and southern Canada and then slowly migrated westward while continuously directing the jet stream and primary storm track at Washington State.
• Debris Flow and Flooding in Washington, November 4 to 9, 20062 deaths · $70 million · 12 eventsA strong, warm and very wet Pacific weather system brought copious amounts of rainfall to Washington from November 2 through 7, with subsequent major flooding that extended through November 11.
• Flooding and Heavy Rain in Washington, November 12 to 19, 20211 death · 1 injured · $55 million · 8 eventsAn upper level trough Gulf Low continued off the west coast that brought a series of atmospheric rivers resulting in flooding across parts of western Washington. This second atmospheric river episode of the month was a set of three atmospheric rivers back-to-back-to-back.
• Flooding in Washington, January 1 to 3, 19971 death · $20 million · 3 eventsMelting snow and rain caused mudslides and sinkholes in conjuction with the late December storms. Redmond got an inch of rain in 12 hrs. About 30 roads in King County were closed due to flooding or mudslides.
• Flooding in Washington, November 28 to 30, 20211 death · $12 million · 3 eventsHeavy rain of 5 to 10 inches caused flooding on many rivers, including the Bogachiel, Nooksack, Samish, Skagit, Skokomish, Stillaguamish Rivers. There was urban and small stream flooding as well. The heavy rain also triggered landslides throughout the area.
• Debris Flows and Flooding in Washington, January 13 to 19, 20111 death · $105,000 · 6 eventsA 66 year old state DOT worker was killed when a tree fell on Highway 203 south of Carnation, hitting him and his truck. Several mudslides blocked roads.
• Flood in Washington, September 17 to 18, 2020$250 million · 1 eventAn eastward-moving upper level trough and associated area of surface low pressure moved across northwest Oregon and southwest Washington September 17-18, resulting in fairly widespread showers and thunderstorms beginning late in the afternoon of the 17th through most of the day…
• Debris Flows and Flooding in Washington, January 7 to 10, 2009$72 million · 15 eventsRainfall of 8-20 inches in the mountains and 1 to 9 inches in the lowlands occurred from Jan 6th through 8th. Flooding was widespread over much of Western Washington. Record flooding occurred on the Snoqualmie, Tolt, and North Fork Stillaguamish Rivers.
• Debris Flow and Flooding in Washington, March 5 to 6, 20148 injured · $1.0 million · 5 eventsThe region was under a transitioning weather regime through the first week of March. March 1st came in dry and very cold under a modified Arctic air mass. This kept soil temperatures below freezing across much of the northeast portion of Washington.
• Flood in Washington, December 29 to 31, 19961 death · 1 eventThe snow changed to rain by 10 am causing numerous flooded streets, basement apartments and mudslides. By that evening anywhere from an inch to an inch and a half of rain fell on top of the snow cover and temperatures rose to near 50 degrees.
• Debris Flow and Avalanche in Washington, January 7 to 11, 2009$13 million · 7 eventsHeavy rainfall on deep snowpack caused excessive runoff and moderate flooding on the Yakima River from near Easton to the mouth.
• Flooding in Washington, March 9 to 31, 2017$12 million · 6 eventsThe month of March was a very wet period for eastern Washington. The Pullman COOP station reported a monthly total of 5.25 inches of precipitation, 2.75 inches above average for the month. The Spokane airport reported 4.11 inches which was 2.50 inches above average.
• Flooding in Washington, October 20 to 23, 2003$9.5 million · 9 eventsFlooding that occurred from Oct 20 to the 23rd included (but was not limited to) the Tolt, Skokomish, Snoqualmie, Snohomish, Satsop, Nooksack, Skagit, Skykomish, Elwha, Dungeness, Bogachiel, Sauk, Hoh, Nisqually, White and Stillaguamish Rivers.
• Flooding and Heavy Rain in Washington, December 1 to 4, 2007$10 million · 6 eventsTwo very powerful storms with origins in the Tropics brought hazardous weather to the Pacific Northwest. The entire forecast area experienced heavy rainfall for an extended period of time. This abnormally long period of consistently heavy rainfall led to widespread flooding.
• Flood in Washington, May 5 to 27, 2018$12 million · 1 eventSpring time mountain snow melt of heavy snow pack in the Canadian Rockies and the north Cascades brought major flooding to the Okanogan River from Oroville to it's mouth at the Columbia River.
• Flooding in Washington, February 6 to 9, 2020$8.8 million · 5 eventsHeavy snow on February 4-5, 2020 was followed by a period of heavy rain, February 5-7. Snow levels rose to near 5000 feet. The heavy rain and snow melt lead to moderate flooding and several landslides along the East Slopes of the Washington Cascades.
• Debris Flow and Flooding in Washington, December 12 to 14, 2010$7.2 million · 7 eventsThe Stillaguamish River reached record level. There were several roads washed out in Kitsap county. 2 homes were damaged from mudslides.
• Flood in Washington, May 11 to 31, 2018$8.0 million · 1 eventAn above average snow pack in the mountains drained by the Pend Oreille and Clark Fork River basins melted at an accelerated rate during the month of May.
• Debris Flow and Flooding in Washington, May 14 to 23, 2011$4.3 million · 52 kt wind · 8 eventsAn upper level low pressure system moved over the Pacific Northwest. Moist and unstable conditions ahead of the low triggered widespread thunderstorms with heavy rainfall and isolated large hail. This combined with the abundant spring snow-pack and wet ground to cause flooding.
• Flooding in Washington, April 1 to 30, 2017$5.5 million · 2 eventsIn addition to a wet March, periodic heavy rains continued during the month of April. In Ferry County, the COOP station at Republic recorded 2.93 inches of rain for the month, which is 1.42 inches above average.
• Flooding and Hail in Washington, June 27, 2001$4.0 million · 1 in hail · 6 eventsSummary of events for June 27 2001:A shortwave moved over the Inland Northwest on the afternoon and evening of June 27. Surface dewpoints in the upper 50s and lower 60s helped scattered thunderstorms to develop and move northeast.
• Flooding and Heavy Rain in Washington, December 8 to 9, 2015$4.5 million · 3 eventsA moist pacific front produced heavy rainfall across Southwest Washington which resulted in river flooding, urban flooding, small stream flooding, and land slides.
• Flooding in Washington, October 16 to 18, 2003$3.5 million · 7 eventsFrom Oct 16th to the 18th, flooding occurred on the Stillaguamish, Bogachiel, Skagit, Nooksack, Elwha, Calawah, and Skokomish Rivers. Record crests were set on the Bogachiel and Calawah. A state of emergency was declared in Skagit, Whatcom and Clallam counties.
• Flooding in Washington, January 12 to 16, 2021$2.9 million · 7 eventsThe period from January 10 to 16 continued a pattern of a strong and persistent Aleutian Low pressure system in the eastern Pacific that began December 29, 2020 and which directed the jet stream and primary storm track at Washington State.

Flood everywhereEvery kind of event in Washington

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.