Flash Flood — Multnomah, Oregon

2017-05-04 · near Oneonta, Multnomah, Oregon

Event narrative

Heavy rain from a strong thunderstorm in addition to a log jam caused the rapid rise of Oneonta Creek in the Oneonta Gorge. Two hikers were injured in the flash flood.

Wider weather episode

A strong upper-level trough generated enough instability for a few severe thunderstorms to develop across NW Oregon.

View location on OpenStreetMap → (45.5881, -122.0776)

Source: NOAA Storm Events Database, event_id 704525. Narrative written by the NWS forecast office that issued the report.