Flash Flood in Clayton County, Iowa
Flash Flood July 17, 2007 – July 18, 2007 · Clayton County, Iowa
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Mud slides caused trees to fall down off Mississippi River bluffs onto roads and cars were floating in the town of McGregor. Numerous locations across northeast Clayton County, Iowa had wash outs, high water, and damage.
The wider storm
During the evening hours of July 17, thunderstorms began forming over parts of northeast Iowa. These storms continued into the early morning hours of July 18, producing significant flash flooding. Rainfall totaled 9.47 inches and 8.09 inches of rain respectively in McGregor and Marquette (Clayton County). Due to the excessive rainfall, numerous homes were flooded, while debris consisting of mud, rocks and trees flowed off hill sides. In addition, law enforcement officials reported cars and liquid propane tanks floating, as flood waters reached as much as seven feet deep.
Began near Mc Gregor (43.0200, -91.1800).
Source: NOAA Storm Events Database, event 40419. Narratives are written by the National Weather Service forecast office that issued the report.
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