Hail and Damaging Winds in Iowa, July 7, 1991

Name: Hail and Damaging Winds in Iowa, July 7, 1991
Start: 1991-07-07T02:10
End: 1991-07-07T12:45
Location: Iowa

July 7, 1991 · NWS ALO · 44 events in 25 counties and zones

41 thunderstorm wind, 3 hail, as filed by the National Weather Service.

Where it happened

Every event with a place to put it. 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

Open the live radar over this ground

The toll

Deaths: 1
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 44

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.

Event by event

41 thunderstorm wind, 3 hail. Local standard time, as filed.

Hail, Clayton

When: July 7, 2:10 AM CST
Where: Clayton County
Measured: 1.75 in hail
Coordinates: 42.670, -91.430

Hail, Delaware

When: July 7, 2:20 AM CST
Where: Delaware County
Measured: 1.75 in hail
Coordinates: 42.630, -91.200

Thunderstorm Wind, Lyon

When: July 7, 8:20 AM CST
Where: Lyon County
Measured: 75 kt (86 mph)
Coordinates: 43.280, -96.230

Thunderstorm Wind, Plymouth

When: July 7, 8:25 AM CST
Where: Plymouth County
Measured: 50 kt (58 mph)
Coordinates: 42.820, -96.300

Thunderstorm Wind, Sioux

When: July 7, 8:27 AM CST
Where: Sioux County
Measured: 69 kt (79 mph)
Coordinates: 43.180, -96.170

Thunderstorm Wind, Sioux

When: July 7, 8:30 AM CST
Where: Sioux County
Measured: 69 kt (79 mph)
Coordinates: 42.970, -96.320

Hail, Plymouth

When: July 7, 8:40 AM CST
Where: Plymouth County
Measured: 0.75 in hail
Coordinates: 42.820, -95.980

Thunderstorm Wind, Sioux

When: July 7, 8:45 AM CST
Where: Sioux County
Measured: 50 kt (58 mph)
Coordinates: 42.980, -96.000

Thunderstorm Wind, Cherokee

When: July 7, 8:50 AM CST
Where: Cherokee County
Measured: 50 kt (58 mph)
Coordinates: 42.820, -95.800

Thunderstorm Wind, O'Brien

When: July 7, 8:55 AM CST
Where: O'Brien County
Measured: 50 kt (58 mph)
Coordinates: 43.180, -95.870

Thunderstorm Wind, Clay

When: July 7, 8:58 AM CST
Where: Clay County
Measured: 50 kt (58 mph)
Coordinates: 42.920, -95.350

Thunderstorm Wind, O'Brien

When: July 7, 9:10 AM CST
Where: O'Brien County
Measured: 74 kt (85 mph)
Coordinates: 42.980, -95.630

Thunderstorm Wind, Cherokee

When: July 7, 9:15 AM CST
Where: Cherokee County
Measured: 60 kt (69 mph)
Coordinates: 42.750, -95.550

Thunderstorm Wind, Clay

When: July 7, 9:20 AM CST
Where: Clay County
Measured: 73 kt (84 mph)
Coordinates: 43.150, -95.150

Thunderstorm Wind, Pocahontas

When: July 7, 9:30 AM CST
Where: Pocahontas County
Measured: 50 kt (58 mph)
Coordinates: 42.730, -94.670

Thunderstorm Wind, Hancock

When: July 7, 9:30 AM CST
Where: Hancock County
Measured: 50 kt (58 mph)
Coordinates: 43.070, -93.620

Thunderstorm Wind, Palo Alto

When: July 7, 9:30 AM CST
Where: Palo Alto County
Measured: 65 kt (75 mph)
Coordinates: 43.130, -94.920

Thunderstorm Wind, Pocahontas

When: July 7, 9:30 AM CST
Where: Pocahontas County
Measured: 61 kt (70 mph)
Coordinates: 42.850, -94.850

Thunderstorm Wind, Humboldt

When: July 7, 9:35 AM CST
Where: Humboldt County
Measured: 67 kt (77 mph)
Coordinates: 42.900, -94.380

Thunderstorm Wind, Palo Alto

When: July 7, 9:45 AM CST
Where: Palo Alto County
Measured: 65 kt (75 mph)
Coordinates: 43.230, -94.770

Thunderstorm Wind, Palo Alto

When: July 7, 9:50 AM CST
Where: Palo Alto County
Measured: 61 kt (70 mph)
Coordinates: 42.970, -94.450

Thunderstorm Wind, Kossuth

When: July 7, 10:00 AM CST
Where: Kossuth County
Measured: 50 kt (58 mph)
Coordinates: 43.070, -94.180

Thunderstorm Wind, Winnebago

When: July 7, 10:11 AM CST
Where: Winnebago County
Measured: 50 kt (58 mph)
Coordinates: 43.270, -93.650

Thunderstorm Wind, Hancock

When: July 7, 10:20 AM CST
Where: Hancock County
Measured: 50 kt (58 mph)
Coordinates: 43.100, -93.820

Thunderstorm Wind, Cerro Gordo

When: July 7, 10:30 AM CST
Where: Cerro Gordo County
Measured: 56 kt (64 mph)
Coordinates: 42.950, -93.380

Thunderstorm Wind, Cerro Gordo

When: July 7, 10:38 AM CST
Where: Cerro Gordo County
Measured: 50 kt (58 mph)
Deaths: 1 direct, 0 indirect
Coordinates: 43.130, -93.480

Thunderstorm Wind, Hancock

When: July 7, 10:40 AM CST
Where: Hancock County
Measured: 50 kt (58 mph)
Coordinates: 43.100, -93.620

Thunderstorm Wind, Franklin

When: July 7, 10:43 AM CST
Where: Franklin County
Measured: 50 kt (58 mph)
Coordinates: 42.750, -93.200

Thunderstorm Wind, Worth

When: July 7, 10:51 AM CST
Where: Worth County
Measured: 50 kt (58 mph)
Coordinates: 43.450, -93.220

Thunderstorm Wind, Worth

When: July 7, 10:51 AM CST
Where: Worth County
Measured: 50 kt (58 mph)
Coordinates: 43.280, -93.200

Thunderstorm Wind, Mitchell

When: July 7, 10:58 AM CST
Where: Mitchell County
Measured: 61 kt (70 mph)
Coordinates: 43.280, -92.820

Thunderstorm Wind, Cerro Gordo

When: July 7, 10:59 AM CST
Where: Cerro Gordo County
Measured: 62 kt (71 mph)
Coordinates: 43.150, -93.200

Thunderstorm Wind, Franklin

When: July 7, 11:00 AM CST
Where: Franklin County
Measured: 50 kt (58 mph)
Coordinates: 42.750, -93.200

Thunderstorm Wind, Floyd

When: July 7, 11:00 AM CST
Where: Floyd County
Measured: 50 kt (58 mph)
Coordinates: 43.130, -92.930

Thunderstorm Wind, Mitchell

When: July 7, 11:00 AM CST
Where: Mitchell County
Measured: 50 kt (58 mph)
Coordinates: 43.430, -92.780

Thunderstorm Wind, Butler

When: July 7, 11:08 AM CST
Where: Butler County
Measured: 50 kt (58 mph)
Coordinates: 42.780, -92.780

Thunderstorm Wind, Butler

When: July 7, 11:30 AM CST
Where: Butler County
Measured: 50 kt (58 mph)
Coordinates: 42.780, -92.620

Thunderstorm Wind, Bremer

When: July 7, 11:30 AM CST
Where: Bremer County
Measured: 50 kt (58 mph)
Coordinates: 42.850, -92.100

Thunderstorm Wind, Floyd

When: July 7, 11:30 AM CST
Where: Floyd County
Measured: 50 kt (58 mph)
Coordinates: 43.070, -92.700

Thunderstorm Wind, Howard

When: July 7, 11:31 AM CST
Where: Howard County
Measured: 50 kt (58 mph)
Coordinates: 43.380, -92.120

Thunderstorm Wind, Winneshiek

When: July 7, 11:38 AM CST
Where: Winneshiek County
Measured: 50 kt (58 mph)
Coordinates: 43.300, -91.800

Thunderstorm Wind, Fayette

When: July 7, 12:08 PM CST
Where: Fayette County
Measured: 50 kt (58 mph)
Coordinates: 42.830, -91.800

Thunderstorm Wind, Clayton

When: July 7, 12:20 PM CST
Where: Clayton County
Measured: 50 kt (58 mph)
Coordinates: 43.020, -91.180

Thunderstorm Wind, Allamakee

When: July 7, 12:45 PM CST
Where: Allamakee County
Measured: 50 kt (58 mph)
Coordinates: 43.270, -91.480

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

Event	Date	Age	Sex	Where	Kind
Thunderstorm Wind, Cerro Gordo	1991-07-07				Direct

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
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.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Iowa in 1991 Every state in 1991 This day in weather history Warnings in Iowa, July 1991

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: 10025296, 10025297, 10025298, 10025299, 10025300, 10025301, 10025302, 10025303, 10025304, 10025305, 10025306, 10025307, 10025308, 10025309, 10025310, 10025311, 10025312, 10025313, 10025314, 10025315, 10025316, 10025317, 10025318, 10025319, 10025320, 10025321, 10025322, 10025323, 10025324, 10025325, 10025326, 10025327, 10025328, 10025329, 10025330, 10025331, 10025332, 10026185, 10026186, 10026399, and more.