Flash Flood — Walla Walla, Washington

2012-07-16 · near Touchet, Walla Walla, Washington

$1.2M

Property damage

Event narrative

Thunderstorms training from south southwest to north northeast over the narrow path produced an estimated 1 to 2 inches of rainfall and caused flash flooding and mud slides. A parked pickup truck was completely submerged. Over a dozen county roads were damaged.

Wider weather episode

A nearly stationary upper level low pressure area parked near Brookings, Oregon brought abundant moisture across eastern Washington. This combined with daytime heating to produce a few severe thunderstorms and locally heavy rainfall. The heavy rainfall caused flash flooding and landslides in several areas. The upper level low moved north away from the area late on July 20.

View location on OpenStreetMap → (46.0037, -118.6710)

Source: NOAA Storm Events Database, event_id 405392. Narrative written by the NWS forecast office that issued the report.