Flash Flood in Johnson County, Iowa

Flash Flood August 11, 2016 – August 12, 2016 · Johnson County, Iowa

$1.5M

Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

The Emergency Manager reported that the Cedar Rapids and Iowa City Railroad (CRANDIC) experienced washed out tracks and a bridge in the Swisher area.

The wider storm

Widespread showers and thunderstorms developed late in the evening of August 11th and continued overnight into August 12th along and ahead of a cold front that moved southeastward across Iowa. These showers and thunderstorms produced very heavy rainfall across eastern Iowa. Widespread rainfall totals of 2 to 5 inches were common across eastern Iowa with some higher amounts of 5 to 7 inches falling within 20 miles of a line from Cedar Rapids to Davenport. Flash flooding resulted from the heavy rainfall in Iowa, Linn, Buchanan, Johnson, and Cedar Counties.

Began near Swisher (41.8400, -91.7000).

Source: NOAA Storm Events Database, event 656654. Narratives are written by the National Weather Service forecast office that issued the report.

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