Tornado and Hail in Iowa, August 18, 1993

Name: Tornado and Hail in Iowa, August 18, 1993
Start: 1993-08-18T11:47
End: 1993-08-18T16:15
Location: Iowa

August 18, 1993 · 23 events in 11 counties and zones

17 thunderstorm wind, 5 hail, 1 tornado, as filed by the National Weather Service.

Where it happened

Every event with a place to put it; 23 filed by county or forecast zone are drawn at its center, in a lighter ring. 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: 0
Property damage: $1.1 million
Crop damage: $349,000
Events: 23

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

17 thunderstorm wind, 5 hail, 1 tornado. Local standard time, as filed.

Thunderstorm Wind, Linn

When: August 18, 11:47 AM CST
Where: Linn County, Cedar Rapids
Measured: 50 kt (58 mph)
Property damage: $5,000
Crop damage: $50
Coordinates: 42.079, -91.599 (the zone’s center; the record gives no point)

Thunderstorm Wind, Crawford

When: August 18, 12:40 PM CST
Where: Crawford County, Dennison
Measured: 50 kt (58 mph)
Property damage: $50,000
Crop damage: $500
Coordinates: 42.037, -95.382 (the zone’s center; the record gives no point)

Thunderstorm Wind, Crawford

When: August 18, 12:47 PM CST
Where: Crawford County, Vail
Measured: 50 kt (58 mph)
Property damage: $50,000
Crop damage: $5,000
Coordinates: 42.037, -95.382 (the zone’s center; the record gives no point)

Thunderstorm Wind, Crawford

When: August 18, 12:51 PM CST
Where: Crawford County, Westside
Measured: 50 kt (58 mph)
Property damage: $50,000
Crop damage: $5,000
Coordinates: 42.037, -95.382 (the zone’s center; the record gives no point)

Hail, Crawford

When: August 18, 12:55 PM CST
Where: Crawford County, Dennison
Measured: 1 in hail
Property damage: $50,000
Crop damage: $5,000
Coordinates: 42.037, -95.382 (the zone’s center; the record gives no point)

Thunderstorm Wind, Crawford

When: August 18, 1:00 PM CST
Where: Crawford County, Jackson Township
Measured: 50 kt (58 mph)
Property damage: $50,000
Crop damage: $5,000
Coordinates: 42.037, -95.382 (the zone’s center; the record gives no point)

Thunderstorm Wind, Carroll

When: August 18, 1:00 PM CST
Where: Carroll County, Carroll
Measured: 1 kt (1 mph)
Property damage: $50,000
Crop damage: $50,000
Coordinates: 42.036, -94.861 (the zone’s center; the record gives no point)

Thunderstorm Wind, Carroll

When: August 18, 1:15 PM CST
Where: Carroll County, Mt. Carmel
Measured: 70 kt (81 mph)
Property damage: $50,000
Crop damage: $50,000
Coordinates: 42.036, -94.861 (the zone’s center; the record gives no point)

Thunderstorm Wind, Sac

When: August 18, 1:15 PM CST
Where: Sac County, Wall Lake
Measured: 50 kt (58 mph)
Property damage: $5,000
Crop damage: $500
Coordinates: 42.386, -95.105 (the zone’s center; the record gives no point)

Thunderstorm Wind, Hardin

When: August 18, 1:20 PM CST
Where: Hardin County, Eldora
Measured: 50 kt (58 mph)
Property damage: $50,000
Crop damage: $5,000
Coordinates: 42.384, -93.240 (the zone’s center; the record gives no point)

Thunderstorm Wind, Calhoun

When: August 18, 1:30 PM CST
Where: Calhoun County, Lake City
Measured: 50 kt (58 mph)
Property damage: $5,000
Crop damage: $5,000
Coordinates: 42.385, -94.640 (the zone’s center; the record gives no point)

Thunderstorm Wind, Carroll

When: August 18, 1:30 PM CST
Where: Carroll County, Breda
Measured: 50 kt (58 mph)
Property damage: $5,000
Crop damage: $500
Coordinates: 42.036, -94.861 (the zone’s center; the record gives no point)

Thunderstorm Wind, Carroll

When: August 18, 1:30 PM CST to 1:40 PM CST
Where: Carroll County, Carroll to Breda to
Measured: 56 kt (64 mph)
Property damage: $50,000
Crop damage: $50,000
Coordinates: 42.036, -94.861 (the zone’s center; the record gives no point)

Tornado, Carroll

When: August 18, 1:45 PM CST
Where: Carroll County, Breda
Rating: F1
Path length: 2 mi
Path width: 40 yd
Property damage: $500,000
Crop damage: $5,000
Coordinates: 42.036, -94.861 (the zone’s center; the record gives no point)

Thunderstorm Wind, Carroll

When: August 18, 2:00 PM CST
Where: Carroll County, Lake City
Measured: 50 kt (58 mph)
Property damage: $5,000
Crop damage: $500
Coordinates: 42.036, -94.861 (the zone’s center; the record gives no point)

Thunderstorm Wind, Adair

When: August 18, 2:05 PM CST
Where: Adair County, Adair
Measured: 61 kt (70 mph)
Property damage: $50,000
Crop damage: $5,000
Coordinates: 41.331, -94.471 (the zone’s center; the record gives no point)

Hail, Guthrie

When: August 18, 2:20 PM CST
Where: Guthrie County, Casey
Measured: 0.75 in hail
Property damage: $5,000
Crop damage: $50,000
Coordinates: 41.684, -94.501 (the zone’s center; the record gives no point)

Hail, Guthrie

When: August 18, 2:22 PM CST
Where: Guthrie County, Adair
Measured: 0.75 in hail
Property damage: $5,000
Crop damage: $50,000
Coordinates: 41.684, -94.501 (the zone’s center; the record gives no point)

Hail, Greene

When: August 18, 2:30 PM CST
Where: Greene County, Jefferson
Measured: 0.75 in hail
Property damage: $5,000
Crop damage: $50,000
Coordinates: 42.036, -94.397 (the zone’s center; the record gives no point)

Thunderstorm Wind, Dallas

When: August 18, 2:55 PM CST
Where: Dallas County, Perry
Measured: 65 kt (75 mph)
Property damage: $50,000
Crop damage: $5,000
Coordinates: 41.685, -94.040 (the zone’s center; the record gives no point)

Hail, Greene

When: August 18, 2:55 PM CST
Where: Greene County, Jefferson
Measured: 0.75 in hail
Property damage: $5,000
Crop damage: $500
Coordinates: 42.036, -94.397 (the zone’s center; the record gives no point)

Thunderstorm Wind, Mahaska

When: August 18, 4:00 PM CST
Where: Mahaska County, Oskaloosa
Measured: 52 kt (60 mph)
Property damage: $50,000
Crop damage: $500
Coordinates: 41.335, -92.641 (the zone’s center; the record gives no point)

Thunderstorm Wind, Mahaska

When: August 18, 4:15 PM CST
Where: Mahaska County, Oskaloosa
Measured: 50 kt (58 mph)
Property damage: $5,000
Crop damage: $500
Coordinates: 41.335, -92.641 (the zone’s center; the record gives no point)

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 1993 Every state in 1993 This day in weather history The tornado archive for Iowa, 1993 Warnings in Iowa, August 1993

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: 10322404, 10321632, 10321633, 10321634, 10321635, 10321636, 10322185, 10322186, 10323951, 10324500, 10322141, 10322187, 10322188, 10322189, 10322190, 10321972, 10321731, 10321732, 10321671, 10321653, 10321672, 10323723, 10323724.