Debris Flow in Oregon

Events

79

Deaths

2

Injuries

8

Damage

$2.8 million

• Debris Flows and Flooding in Oregon, January 1 to 5, 20091 death · 5 injured · $1.3 million · 26 eventsHeavy rainfall drenched the region to begin the new year. The heavy rainfall combined with snowmelt runoff caused flooding along multiple rivers in northwest Oregon.
• Debris Flow and Flooding in Oregon, December 3 to 4, 20232 deaths · 4 eventsA pair of moderate atmospheric rivers brought heavy rain leading to minor river and urban flooding to portions of northwest Oregon.
• Debris Flow and Flooding in Oregon, January 10 to 16, 20211 death · 1 injured · $46,000 · 70 kt wind · 29 eventsA series of slow moving fronts brought periods of heavy rain along with strong winds. This resulted in high surf; coastal, river and urban flooding; landslides; and debris flows.
• Debris Flow and Flooding in Oregon, January 16 to 21, 2011$18 million · 16 eventsA series of weather disturbances over the weekend brought sub-tropical moisture to the Pacific Northwest producing heavy rainfall over the region.
• Debris Flows in Oregon, February 5 to 9, 19961 death · 6 eventsDuring the week of February 3rd through the 10th, a river of subtropical atmospheric moisture flowed above northern Oregon. Weather disturbances within this flow produced very heavy rainfall, particularly in the northwestern part of the state.
• Debris Flow and Flooding in Oregon, November 12 to 13, 2008$3.8 million · 4 eventsHeavy rainfall, fueled by a tropical moisture source that had origins in the west Pacific, drenched the region over the course of a few days. This heavy rainfall caused flooding along multiple rivers in northwest Oregon.
• Debris Flow in Oregon, December 11, 2007$1.5 million · 1 eventAn unusually strong combination of storms brought an extended period of rainfall to northwest Oregon. Accumulations from this recent rainfall in the north Oregon Coast Range were around a foot or more of water, which fell in a relatively short period of time--just over two days.
• Flash Flooding and Debris Flow in Oregon, July 16 to 20, 2012$232,000 · 2 in hail · 29 eventsA nearly stationary upper level low pressure area parked near Brookings, Oregon brought abundant moisture across eastern Oregon. This combined with daytime heating to produce a few severe thunderstorms and locally heavy rainfall.
• Debris Flow and Heavy Snow in Oregon, December 8 to 9, 20041 injured · $100,000 · 50 kt wind · 8 eventsA large powerful Pacific storm brought a wide variety of weather to Northwestern Oregon. High winds along the Coast heralded the approach of the storm early in the morning.
• Debris Flow and Flooding in Oregon, April 7 to 13, 2019$100,000 · 13 eventsA particularly strong atmospheric river took aim for the south Willamette Valley, sitting over areas south of Salem for two days, producing anywhere from 2.5 to 5 inches of rain over a 48 hour period.
• Debris Flow and Flooding in Oregon, February 27 to 28, 2022$60,000 · 72 kt wind · 7 eventsAn atmospheric river event, starting late Sunday February 27th and continuing through Monday February 28th, brought heavy rain and strong winds to northwest Oregon and southwest Washington.
• Debris Flow and Flooding in Oregon, March 14 to 17, 2025$37,000 · 10 eventsTwo quick hitting shortwave troughs brought widespread and sustained precipitation to the western Oregon allowing for heavy snowfall across the Cascades.
• Debris Flow and Flooding in Oregon, February 10 to 12, 2019$30,000 · 56 kt wind · 10 eventsBack-to-back low pressure systems dropping south along the coast of British Columbia and Washington brought cold air south into NW Oregon as well as plenty of moisture. Locations in the Columbia Gorge and Hood River Valley saw 1 to 2 feet of snow.
• Debris Flows and Flooding in Oregon, January 6 to 8, 2022$32,000 · 7 eventsThe second in a series of strong Pacific fronts brought another round of heavy rain and resulting flooding of mainstem rivers draining the coastal mountains and interior of northwest Oregon.
• Debris Flow in Oregon, December 30 to 31, 2005$35,000 · 1 eventHeavy rainfall contributed to landslide on west side of Suttle Lake in southwest Jefferson County. The slide damaged several vehicles and buildings at Camp Davidson Church Retreat.
• Debris Flows in Oregon, November 18 to 20, 19962 injured · 5 eventsHeavy rainfall on November 18th and 19th triggered dozens of mudslides in Northwestern Oregon. Near Newport 2 men were injured when a mudslide swept their vehicle off the road.
• Debris Flow and Flooding in Oregon, January 10 to 14, 200615 eventsA series of wet Pacific storms brought heavy rains to the area, causing flooding and damage.
• Debris Flow and Flooding in Oregon, January 7 to 9, 200913 eventsA powerful storm system brought very heavy rainfall to the region in early January. The heavy rainfall combined with snowmelt runoff caused flooding along multiple rivers in southwest Washington.
• Debris Flow and Flooding in Oregon, December 19 to 22, 202059 kt wind · 13 eventsA series of strong Pacific fronts moved across the region bringing high winds to the coast with heavy rain across much of the area. The heavy rains resulted in flooding of some coastal rivers as well as small stream flooding and a debris flow.
• Debris Flow and Hail in Oregon, June 4, 2009$3,000 · 1 in hail · 12 eventsAn unusually moist and unstable air mass combined with daytime heating to produce thunderstorms with damaging wind, heavy rainfall, and locally large hail.
• Debris Flows in Oregon, January 19 to 20, 20129 eventsTwo strong and very moist Pacific weather systems brought widespread heavy rains to the Pacific Northwest. These heavy rains combined with melting snow to produce several landslides in western Oregon.
• Debris Flow and Flooding in Oregon, June 2 to 6, 20108 eventsHeavy rainfall in early June pushed many streams and rivers to near or above flood stage. Flooding occurred on Little Creek in Union, Mill Creek in Cove, Imnaha River, John Day River, Wallowa River, and Grand Ronde River.
• Debris Flows in Oregon, December 25 to 31, 19966 eventsA series of strong Pacific storm systems brought a variety of disrupting weather events to Northwestern Oregon and Southwest Washington beginning late Christmas night and continuing through the end of the year.
• Debris Flows in Oregon, January 1 to 7, 19975 eventsHeavy rains during the last week of December continued into January and caused numerous mudslides throughout Northwestern Oregon. A few homes and businesses were damaged with many roads and highways temporarily cut by mudslides.
• Debris Flow and Heavy Rain in Oregon, June 6, 20104 eventsStrong storms moved over Northwest Oregon bringing heavy rainfall amounts to much of the area over a short period of time. This heavy rainfall caused a landslide to occur in Southwest Portland.

Debris Flow everywhereEvery kind of event in Oregon

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.