Flash Flood — Wayne, Iowa

2009-08-26 · near Bentonville, Wayne, Iowa

Event narrative

Emergency Manager reported flash flooding at several locations over the southwest half of Wayne County between 2030 and 2400 CDT. Several roads were closed due to high water rushing bumper deep. Numerous basements were flooded in Corydon.

Wider weather episode

A cold frontal boundary dropped south into Iowa and stalled out just south of the state. Rounds of thunderstorms moved east-northeast across the state as a series of waves moved along the front. Heavy rainfall resulted during the early morning of the 26th, then again during the evening of the 26th into the morning of the 27th. A band of 3 to as much as 7 inches of rain fell from south central into east central Iowa. Conditions had been relatively dry prior to the rain and as a result, most of the flooding was limited to urban and small stream flooding. General flooding occurred in Tama County in several locations. Water was reported over both state and U.S. highways for several hours. Flash flooding occurred in Wayne County with several roads covered with water flowing car bumper deep. Reports from the county indicated that there was extensive road damage with at least 50 washouts.

View location on OpenStreetMap → (40.7744, -93.3653)

Source: NOAA Storm Events Database, event_id 184918. Narrative written by the NWS forecast office that issued the report.