Iowa, 1974

Hail and Damaging Winds in Iowa, August 18, 1974

August 18, 1974 · 6 events in 3 counties and zones

4 hail, 2 thunderstorm wind, 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
None recorded
Crop damage
None recorded
Events
6

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

4 hail, 2 thunderstorm wind. Local standard time, as filed.

Hail, Osceola

When
August 18, 3:50 PM CST
Where
Osceola County
Measured
1.75 in hail
Coordinates
43.400, -95.770

Hail, O'Brien

When
August 18, 5:00 PM CST
Where
O'Brien County
Measured
1.75 in hail
Coordinates
43.180, -95.670

Hail, O'Brien

When
August 18, 5:00 PM CST
Where
O'Brien County
Measured
1.75 in hail
Coordinates
43.020, -95.600

Thunderstorm Wind, O'Brien

When
August 18, 5:00 PM CST
Where
O'Brien County
Coordinates
43.180, -95.670

Thunderstorm Wind, O'Brien

When
August 18, 5:00 PM CST
Where
O'Brien County
Coordinates
43.080, -95.630

Hail, Buena Vista

When
August 18, 5:45 PM CST
Where
Buena Vista County
Measured
1 in hail
Coordinates
42.920, -95.350

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

More

Every storm in Iowa in 1974Every state in 1974This day in weather history

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: 10014579, 10014580, 10014581, 10014582, 10015436, 10015437.