Thunderstorm Wind, Black Hawk
- When
- May 23, 12:57 PM CST
- Where
- Black Hawk County, Waterloo Airport
- Measured
- 56 kt (64 mph)
- Property damage
- $5,000
- Coordinates
- 42.470, -92.309 (the zone’s center; the record gives no point)
Damaging Winds in Iowa, May 23, 1994
9 thunderstorm wind, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 9 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $855,000
- Crop damage
- $5,000
- 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
9 thunderstorm wind. Local standard time, as filed.
Thunderstorm Wind, Allamakee
- When
- May 23, 1:15 PM CST
- Where
- Allamakee County, Postville
- Measured
- 50 kt (58 mph)
- Property damage
- $50,000
- Coordinates
- 43.284, -91.378 (the zone’s center; the record gives no point)
Thunderstorm Wind, Clayton
- When
- May 23, 1:40 PM CST
- Where
- Clayton County, Luana
- Measured
- 50 kt (58 mph)
- Property damage
- $50,000
- Coordinates
- 42.845, -91.341 (the zone’s center; the record gives no point)
Thunderstorm Wind, Clayton
- When
- May 23, 1:50 PM CST
- Where
- Clayton County, McGregor
- Measured
- 52 kt (60 mph)
- Property damage
- $50,000
- Coordinates
- 42.845, -91.341 (the zone’s center; the record gives no point)
Thunderstorm Wind, Clayton
- When
- May 23, 1:57 PM CST
- Where
- Clayton County, Elkader
- Measured
- 63 kt (72 mph)
- Property damage
- $50,000
- Crop damage
- $5,000
- Coordinates
- 42.845, -91.341 (the zone’s center; the record gives no point)
Thunderstorm Wind, Clayton
- When
- May 23, 2:05 PM CST
- Where
- Clayton County, Garnavillo
- Measured
- 70 kt (81 mph)
- Property damage
- $500,000
- Coordinates
- 42.845, -91.341 (the zone’s center; the record gives no point)
Thunderstorm Wind, Linn
- When
- May 23, 3:05 PM CST
- Where
- Linn County, Hiawatha
- Measured
- 50 kt (58 mph)
- Property damage
- $50,000
- Coordinates
- 42.079, -91.599 (the zone’s center; the record gives no point)
Thunderstorm Wind, Linn
- When
- May 23, 3:15 PM CST
- Where
- Linn County, Marrion
- Measured
- 50 kt (58 mph)
- Property damage
- $50,000
- Coordinates
- 42.079, -91.599 (the zone’s center; the record gives no point)
Thunderstorm Wind, Linn
- When
- May 23, 3:33 PM CST
- Where
- Linn County, Palo
- Measured
- 70 kt (81 mph)
- Property damage
- $50,000
- Coordinates
- 42.079, -91.599 (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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Hail and Damaging Winds in South Dakota, May 23, 1994
- Hail and Damaging Wind in Indiana, May 23, 1994
- Hail and Damaging Winds in Wisconsin, May 23, 1994
- Hail and Damaging Wind in North Dakota, May 23, 1994
- Hail and Damaging Wind in Massachusetts, May 23, 1994
- Hail and Damaging Winds in Minnesota, May 23, 1994
- Hail in Rhode Island, May 23, 1994
- Tornadoes in Nebraska, May 23, 1994
- Hail in Oklahoma, May 23, 1994
- Hail in Connecticut, May 23, 1994
- Hail in Maine, May 23, 1994
- Hail in Texas, May 23, 1994
More
Every storm in Iowa in 1994Every state in 1994This day in weather historyWarnings in Iowa, May 1994
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: 10322254, 10322010, 10321535, 10321536, 10321537, 10321538, 10324423, 10324424, 10324425.