Iowa, 1975

Tornadoes and Damaging Winds in Iowa, June 4, 1975

June 4, 1975 · 7 events in 7 counties and zones

5 thunderstorm wind, 2 tornado, 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

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The toll

Deaths
0
Injuries
0
Property damage
$28,000
Crop damage
None recorded
Events
7

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

5 thunderstorm wind, 2 tornado. Local standard time, as filed.

Thunderstorm Wind, Monona

When
June 4, 12:05 AM CST
Where
Monona County
Coordinates
42.170, -95.800

Tornado, Clay

When
June 4, 12:30 AM CST
Where
Clay County
Rating
F2
Path width
33 yd
Property damage
$3,000
Coordinates
43.030, -95.150

Thunderstorm Wind, Cerro Gordo

When
June 4, 2:31 AM CST
Where
Cerro Gordo County
Measured
50 kt (58 mph)
Coordinates
43.150, -93.330

Tornado, Butler

When
June 4, 2:40 AM CST
Where
Butler County
Rating
F2
Path width
33 yd
Property damage
$25,000
Coordinates
42.850, -92.720

Thunderstorm Wind, Grundy

When
June 4, 3:00 AM CST
Where
Grundy County
Coordinates
42.550, -92.670

Thunderstorm Wind, Black Hawk

When
June 4, 3:09 AM CST
Where
Black Hawk County
Coordinates
42.520, -92.450

Thunderstorm Wind, Dubuque

When
June 4, 4:36 AM CST
Where
Dubuque County
Measured
54 kt (62 mph)
Coordinates
42.400, -90.720

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.
Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.

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

The same day elsewhere

More

Every storm in Iowa in 1975Every state in 1975This day in weather historyThe tornado archive for Iowa, 1975

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: 10011507, 10011508, 10011509, 10011510, 10011511, 10011512, 10011513.