Flash Flood — Chelan, Washington

2019-06-26 · near Olds, Chelan, Washington

Event narrative

Several photographs were printed in the Wenatchee World Newspaper showing street flooding and storm drain overflow in the city of Wenatchee from a thunderstorm with heavy rain.

Wider weather episode

During the afternoon of June 27th a complex of slow moving thunderstorms developed over the western Columbia Basin and the eastern slopes of the Cascades in a moist and unstable air mass near the center of an upper level low pressure. Several reports of flash flooding were received from the Wenatchee area where the COOP observer at the Wenatchee Water Plant reported 0.97 inch of rain from one of these storms.

A brief funnel cloud was photographed appending from another storm over the Waterville Plateau.

View location on OpenStreetMap → (47.4528, -120.3518)

Source: NOAA Storm Events Database, event_id 833848. Narrative written by the NWS forecast office that issued the report.