Hail, Chickasaw
- When
- July 12, 11:00 AM CST
- Where
- Chickasaw County
- Measured
- 1.5 in hail
- Coordinates
- 43.000, -92.080
Tornadoes and Hail in Iowa, July 12, 1971
7 tornado, 7 thunderstorm wind, 1 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
The toll
- Deaths
- 0
- Injuries
- 10
- Property damage
- $13 million
- Crop damage
- None recorded
- Events
- 15
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
7 tornado, 7 thunderstorm wind, 1 hail. Local standard time, as filed.
Tornado, Worth
- When
- July 12, 4:50 PM CST
- Where
- Worth County
- Rating
- F3
- Path length
- 15.4 mi
- Path width
- 833 yd
- Property damage
- $2.5 million
- Coordinates
- 43.330, -93.030
Tornado, Howard
- When
- July 12, 5:15 PM CST
- Where
- Howard County
- Rating
- F4
- Path length
- 2.3 mi
- Path width
- 1,320 yd
- Injuries
- 4 direct, 0 indirect
- Property damage
- $2.5 million
- Coordinates
- 43.230, -92.450
Tornado, Chickasaw
- When
- July 12, 5:15 PM CST
- Where
- Chickasaw County
- Rating
- F4
- Path length
- 17.5 mi
- Path width
- 1,320 yd
- Property damage
- $2.5 million
- Coordinates
- 43.220, -92.380
Tornado, Fayette
- When
- July 12, 5:58 PM CST
- Where
- Fayette County
- Rating
- F4
- Path length
- 1.1 mi
- Path width
- 1,320 yd
- Injuries
- 4 direct, 0 indirect
- Property damage
- $2.5 million
- Coordinates
- 43.050, -92.050
Tornado, Fayette
- When
- July 12, 6:30 PM CST
- Where
- Fayette County
- Rating
- F2
- Path length
- 6.4 mi
- Path width
- 100 yd
- Property damage
- $250,000
- Coordinates
- 42.880, -92.050
Thunderstorm Wind, Clayton
- When
- July 12, 6:45 PM CST
- Where
- Clayton County
- Coordinates
- 42.780, -91.500
Thunderstorm Wind, Fayette
- When
- July 12, 6:50 PM CST
- Where
- Fayette County
- Coordinates
- 42.780, -91.780
Thunderstorm Wind, Fayette
- When
- July 12, 6:58 PM CST
- Where
- Fayette County
- Coordinates
- 42.700, -91.680
Tornado, Bremer
- When
- July 12, 7:00 PM CST
- Where
- Bremer County
- Rating
- F2
- Path width
- 100 yd
- Property damage
- $250,000
- Coordinates
- 42.830, -92.100
Tornado, Delaware
- When
- July 12, 9:10 PM CST
- Where
- Delaware County
- Rating
- F3
- Path width
- 833 yd
- Injuries
- 2 direct, 0 indirect
- Property damage
- $2.5 million
- Coordinates
- 42.300, -91.520
Thunderstorm Wind, Delaware
- When
- July 12, 9:30 PM CST
- Where
- Delaware County
- Coordinates
- 42.280, -91.500
Thunderstorm Wind, Jones
- When
- July 12, 10:00 PM CST
- Where
- Jones County
- Coordinates
- 42.080, -91.280
Thunderstorm Wind, Jones
- When
- July 12, 10:10 PM CST
- Where
- Jones County
- Coordinates
- 42.080, -91.000
Thunderstorm Wind, Cedar
- When
- July 12, 10:30 PM CST
- Where
- Cedar County
- Coordinates
- 41.780, -91.080
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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.
- 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 1971Every state in 1971This day in weather historyThe tornado archive for Iowa, 1971
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: 10013552, 10013553, 10013554, 10013555, 10013556, 10013557, 10013558, 10013559, 10013560, 10013561, 10013562, 10013563, 10013564, 10013565, 10013566.