Hail, Clay
- When
- July 13, 3:57 PM CST
- Where
- Clay County
- Measured
- 1.75 in hail
- Coordinates
- 42.950, -95.000
Tornadoes and Hail in Iowa, July 13, 1979
4 thunderstorm wind, 3 hail, 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $275,000
- 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.
Event by event
4 thunderstorm wind, 3 hail, 2 tornado. Local standard time, as filed.
Hail, Palo Alto
- When
- July 13, 4:27 PM CST
- Where
- Palo Alto County
- Measured
- 1 in hail
- Coordinates
- 43.120, -94.700
Thunderstorm Wind, Hancock
- When
- July 13, 5:00 PM CST
- Where
- Hancock County
- Coordinates
- 42.980, -93.970
Thunderstorm Wind, Hardin
- When
- July 13, 6:10 PM CST
- Where
- Hardin County
- Coordinates
- 42.520, -93.270
Tornado, Wright
- When
- July 13, 6:15 PM CST
- Where
- Wright County
- Rating
- F1
- Path length
- 0.8 mi
- Path width
- 60 yd
- Property damage
- $25,000
- Coordinates
- 42.830, -93.620
Thunderstorm Wind, Black Hawk
- When
- July 13, 6:45 PM CST
- Where
- Black Hawk County
- Coordinates
- 42.420, -92.450
Hail, Clay
- When
- July 13, 8:00 PM CST
- Where
- Clay County
- Measured
- 2.75 in hail
- Coordinates
- 43.150, -94.920
Tornado, Linn
- When
- July 13, 9:30 PM CST
- Where
- Linn County
- Rating
- F1
- Path length
- 0.2 mi
- Path width
- 20 yd
- Property damage
- $250,000
- Coordinates
- 41.920, -91.420
Thunderstorm Wind, Franklin
- When
- July 13, 10:30 PM CST
- Where
- Franklin County
- Coordinates
- 42.750, -93.200
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.
- 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
- Tornadoes and Hail in South Dakota, July 13, 1979
- Hail and Damaging Wind in Missouri, July 13, 1979
- Hail and Damaging Winds in Kansas, July 13, 1979
- Damaging Winds in Indiana, July 13, 1979
- Damaging Winds in Illinois, July 13, 1979
- Damaging Wind in Alabama, July 13, 1979
- Damaging Wind in Maryland, July 13, 1979
- Damaging Wind in Mississippi, July 13, 1979
- Damaging Wind in Virginia, July 13, 1979
- Damaging Wind in Colorado, July 13, 1979
More
Every storm in Iowa in 1979Every state in 1979This day in weather historyThe tornado archive for Iowa, 1979
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: 10014202, 10014203, 10014204, 10014205, 10014206, 10014207, 10014208, 10014209, 10014210.