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.

Lightning in BUCHANAN, IOWA
From 11-AUG-16 21:10:00 to 11-AUG-16 21:10:00 (CST-6)
Location: OTTERVILLE
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Emergency Manager reported that Lightning struck a barn on Henley Avenue about 2 miles northwest of Independence and caused it to burn down.  There was also some loss of livestock during the fire.

Flash Flood in JOHNSON, IOWA
From 11-AUG-16 22:00:00 to 12-AUG-16 01:00:00 (CST-6)
Location: SWISHER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported that local streams were swollen and that was washed acrossed roads. They also reported that water was in the basements of two homes.

Flash Flood in JOHNSON, IOWA
From 11-AUG-16 22:04:00 to 12-AUG-16 02:30:00 (CST-6)
Location: SWISHER
Flood cause: Heavy Rain
Property damage: 1.50M
Crop damage: 0.00K
Reported by: Emergency Manager

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

Flash Flood in LINN, IOWA
From 11-AUG-16 22:13:00 to 12-AUG-16 02:30:00 (CST-6)
Location: HIAWATHA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reported a road closure in town due to water over the road.

Flash Flood in CEDAR, IOWA
From 12-AUG-16 00:30:00 to 12-AUG-16 12:00:00 (CST-6)
Location: SUNBURY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Cedar County Road Department reported that a few roads remained closed late Friday morning due to water over the roads. In addition, numerous roads were covered with water from flash flooding.

Flash Flood in JOHNSON, IOWA
From 12-AUG-16 06:41:00 to 12-AUG-16 06:41:00 (CST-6)
Location: SWISHER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A public report of swollen streams and gravel washed arcross roadways. Water was in the basement of two homes. A CoCoRAHS member, in Swisher,  reported 6.88 inches of rain during the event.

Flash Flood in LINN, IOWA
From 11-AUG-16 19:04:00 to 11-AUG-16 23:04:00 (CST-6)
Location: CEDAR RAPIDS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Local broadcast media reported that a car had stalled out in high water that was over the road.  The occupants of the card had to be helped to safety.

Flash Flood in IOWA, IOWA
From 11-AUG-16 21:15:00 to 12-AUG-16 01:00:00 (CST-6)
Location: MARENGO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported that water was 16 inches deep on roads in town. There was water that was 18 inches deep blocking a road 1.5 miles north of town.

Flash Flood in BUCHANAN, IOWA
From 11-AUG-16 21:30:00 to 12-AUG-16 01:00:00 (CST-6)
Location: BRANDON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Emergency Manager reported that a road was washed out at an intersection in town.