Flash Flood — Asotin, Washington

2023-06-09 · near Clarkston Hgts, Asotin, Washington

Event narrative

Flash flooding impacted several roads of Clarkston. Half an inch of rain fell in 15 minutes from 1330LST to 1345LST. Flooding also impacted on State Highway 129 between Asotin and Clarkston, with mud and debris on the roadway.

Wider weather episode

A slow moving thunderstorm moved over the Lewiston/Clarkston area and caused flash flooding. The KLWS ASOS recorded 0.68 inches of rain from 1250LST to 1356LST.

View location on OpenStreetMap → (46.4200, -117.0600)

Source: NOAA Storm Events Database, event_id 1116224. Narrative written by the NWS forecast office that issued the report.