Debris Flow in Multnomah County, Oregon

Debris Flow January 13, 2021 · Multnomah County, Oregon

Death

Injury

$35K

Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Multiple landslides and debris flow were triggered by heavy rain near Dodson between 0000PST and 0300PST. About 25 homes in the area were evacuated. One motorist was swept away by the debris flow near the intersection of NE Frontage Road and the Ainsworth State Park exit off I-84.

The wider storm

A 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. As the front moved inland early on the 13th, a debris flow resulted in a fatality in the Columbia River Gorge. The front brought a burst of 35-50 mph winds to the Willamette Valley and southwest Washington interior resulting in over 100K customers without power across southwest Washington and northwest Oregon.

Began near Dodson (45.5994, -122.0391).

Source: NOAA Storm Events Database, event 938288. Narratives are written by the National Weather Service forecast office that issued the report.

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