Tornadoes and Hail in Iowa, July 1, 1983

Name: Tornadoes and Hail in Iowa, July 1, 1983
Start: 1983-07-01T00:14
End: 1983-07-01T23:00
Location: Iowa

July 1, 1983 · NWS T · 29 events in 20 counties and zones

26 thunderstorm wind, 2 tornado, 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

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 1
Property damage: $500,000
Crop damage: None recorded
Events: 29

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

26 thunderstorm wind, 2 tornado, 1 hail. Local standard time, as filed.

Thunderstorm Wind, Plymouth

When: July 1, 12:14 AM CST
Where: Plymouth County
Measured: 52 kt (60 mph)
Coordinates: 42.830, -96.550

Thunderstorm Wind, Plymouth

When: July 1, 12:24 AM CST
Where: Plymouth County
Measured: 59 kt (68 mph)
Coordinates: 42.720, -96.250

Thunderstorm Wind, Lyon

When: July 1, 12:30 AM CST
Where: Lyon County
Measured: 60 kt (69 mph)
Coordinates: 43.430, -96.180

Thunderstorm Wind, Woodbury

When: July 1, 12:35 AM CST
Where: Woodbury County
Coordinates: 42.500, -96.380

Thunderstorm Wind, Sioux

When: July 1, 1:00 AM CST
Where: Sioux County
Coordinates: 43.020, -96.050

Thunderstorm Wind, O'Brien

When: July 1, 1:00 AM CST
Where: O'Brien County
Coordinates: 43.170, -95.700

Thunderstorm Wind, O'Brien

When: July 1, 1:20 AM CST
Where: O'Brien County
Coordinates: 42.980, -95.630

Thunderstorm Wind, O'Brien

When: July 1, 1:35 AM CST
Where: O'Brien County
Coordinates: 43.080, -95.630

Thunderstorm Wind, Buena Vista

When: July 1, 1:39 AM CST
Where: Buena Vista County
Coordinates: 42.830, -95.170

Thunderstorm Wind, Cherokee

When: July 1, 1:50 AM CST
Where: Cherokee County
Coordinates: 42.730, -95.620

Thunderstorm Wind, Pocahontas

When: July 1, 2:00 AM CST
Where: Pocahontas County
Measured: 65 kt (75 mph)
Coordinates: 42.830, -94.700

Thunderstorm Wind, Dickinson

When: July 1, 2:10 AM CST
Where: Dickinson County
Coordinates: 43.430, -95.100

Thunderstorm Wind, Clay

When: July 1, 2:10 AM CST
Where: Clay County
Coordinates: 42.920, -95.350

Thunderstorm Wind, Buena Vista

When: July 1, 2:20 AM CST
Where: Buena Vista County
Coordinates: 42.830, -95.170

Thunderstorm Wind, Clay

When: July 1, 2:30 AM CST
Where: Clay County
Coordinates: 42.950, -95.000

Thunderstorm Wind, Kossuth

When: July 1, 2:35 AM CST
Where: Kossuth County
Coordinates: 43.070, -94.230

Thunderstorm Wind, Buena Vista

When: July 1, 2:40 AM CST
Where: Buena Vista County
Coordinates: 42.850, -94.970

Thunderstorm Wind, Pocahontas

When: July 1, 3:00 AM CST
Where: Pocahontas County
Coordinates: 42.730, -94.680

Thunderstorm Wind, Humboldt

When: July 1, 3:10 AM CST
Where: Humboldt County
Coordinates: 42.770, -94.220

Thunderstorm Wind, Webster

When: July 1, 3:45 AM CST
Where: Webster County
Coordinates: 42.500, -94.180

Thunderstorm Wind, Black Hawk

When: July 1, 4:30 AM CST
Where: Black Hawk County
Coordinates: 42.500, -92.350

Thunderstorm Wind, Hamilton

When: July 1, 4:30 AM CST
Where: Hamilton County
Coordinates: 42.470, -93.820

Hail, Grundy

When: July 1, 4:55 AM CST
Where: Grundy County
Measured: 1.75 in hail
Coordinates: 42.230, -92.880

Thunderstorm Wind, Marshall

When: July 1, 5:00 AM CST
Where: Marshall County
Coordinates: 42.120, -93.000

Thunderstorm Wind, Marshall

When: July 1, 5:20 AM CST
Where: Marshall County
Coordinates: 41.930, -93.100

Thunderstorm Wind, Grundy

When: July 1, 5:30 AM CST
Where: Grundy County
Coordinates: 42.230, -92.880

Thunderstorm Wind, Benton

When: July 1, 7:00 AM CST
Where: Benton County
Coordinates: 42.170, -92.030

Tornado, Cedar

When: July 1, 10:30 PM CST
Where: Cedar County
Rating: F1
Path length: 15 mi
Path width: 50 yd
Injuries: 1 direct, 0 indirect
Property damage: $250,000
Coordinates: 41.620, -91.270

Tornado, Scott

When: July 1, 11:00 PM CST
Where: Scott County
Rating: F0
Path length: 0.2 mi
Path width: 20 yd
Property damage: $250,000
Coordinates: 41.530, -90.580

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.
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.

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

The same day elsewhere

Every storm in Iowa in 1983 Every state in 1983 This day in weather history The tornado archive for Iowa, 1983

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: 10011591, 10011592, 10011593, 10011594, 10011595, 10011596, 10011809, 10011810, 10011811, 10011812, 10011813, 10011814, 10011815, 10011816, 10011817, 10011818, 10011819, 10011820, 10011821, 10011822, 10011823, 10011824, 10011825, 10011826, 10011827, 10011828, 10011829, 10011830, 10011831.