Thunderstorm Wind, Des Moines
- When
- June 11, 3:31 PM CST
- Where
- Des Moines County, Burlington Arpt
- Measured
- 53 kt (61 mph)
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 40.780, -91.120
61 mph wind gust measured by ASOS equipment at the airport.
Flash Flooding and Flooding in Iowa, June 11, 1999
4 flash flood, 2 hail, 2 flood, 1 thunderstorm wind, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 6 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 9
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The radar
The Quad Cities radar (KDVN), 103 km away, was scanning. The volume nearest the first event began at 21:32 UTC.
Event by event
4 flash flood, 2 hail, 2 flood, 1 thunderstorm wind. Local standard time, as filed.
Hail, Cedar
- When
- June 11, 5:52 PM CST
- Where
- Cedar County, West Branch
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.670, -91.350
Flood, Linn
- When
- June 11, 7:56 PM CST
- Where
- Linn County, Cedar Rapids
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.079, -91.599 (the zone’s center; the record gives no point)
Heavy rain resulted in the flooding of several streets.
Hail, Benton
- When
- June 11, 7:59 PM CST
- Where
- Benton County, 2 mi S of Atkins
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.950, -91.870
Flood, Linn
- When
- June 11, 8:30 PM CST
- Where
- Linn County, Hiawatha
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.079, -91.599 (the zone’s center; the record gives no point)
Heavy rain of just over 2 inches in an hour flooded several streets. Cars were stranded in standing water onNorth Center Point Road and Robins Road.
Flash Flood, Iowa
- When
- June 11, 8:50 PM CST
- Where
- Iowa County, 3 mi NW of Marengo
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.686, -92.065 (the zone’s center; the record gives no point)
Several roads were covered in standing water.
Flash Flood, Iowa
- When
- June 11, 8:50 PM CST
- Where
- Iowa County, 2 mi E of Marengo
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.686, -92.065 (the zone’s center; the record gives no point)
Slow moving thunderstorms dumped over 2 inches of rain. Several streets were covered in standing water of around a foot. Two cars were washed into a ditch by the flood waters.
Flash Flood, Linn
- When
- June 11, 9:02 PM CST
- Where
- Linn County, Cedar Rapids
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 42.079, -91.599 (the zone’s center; the record gives no point)
Very heavy rain of just over 3 inches caused flooding of streets and parking lots throughout the city.
Flash Flood, Iowa
- When
- June 11, 9:35 PM CST
- Where
- Iowa County, Marengo
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 41.686, -92.065 (the zone’s center; the record gives no point)
Slow moving thunderstorms brought torrential rains of 4 to 5 inches. Numerous roads were covered in standing water over a foot deep. Several cars were washed off roads.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Flash Flooding in Texas, June 11 to 12, 1999
- Flash Flooding and Hail in Texas, June 11 to 12, 1999
- Hail in Colorado, June 11, 1999
- Hail in Texas, June 11, 1999
- Tornadoes and Flash Flooding in Texas, June 11 to 12, 1999
- Damaging Winds in Illinois, June 11, 1999
- Hail and Damaging Winds in Ohio, June 11, 1999
- Hail and Damaging Winds in Michigan, June 11, 1999
- Damaging Wind and Lightning Strikes in Michigan, June 11, 1999
- Flood and Hail in Wisconsin, June 11, 1999
- Lightning Strike in Oklahoma, June 11, 1999
- Damaging Winds in Michigan, June 11, 1999
More
Every storm in Iowa in 1999Every state in 1999This day in weather historyWarnings in Iowa, June 1999
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5716187, 5716188, 5716189, 5716190, 5716263, 5716264, 5716265, 5716266, 5716267.