Debris Flow — Lower Columbia, Washington

2009-01-08 · Lower Columbia, Washington

Event narrative

Heavy rain caused a landslide on highway 411 near mile post 9.

Wider weather episode

A 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.

Source: NOAA Storm Events Database, event_id 149869. Narrative written by the NWS forecast office that issued the report.