Thunderstorm Wind, Wapello
- When
- April 27, 12:20 AM CST
- Where
- Wapello County
- Coordinates
- 41.170, -92.630
Tornadoes and Damaging Winds in Iowa, April 27, 1991
13 thunderstorm wind, 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
- 1
- Property damage
- $500,000
- 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
13 thunderstorm wind, 2 tornado. Local standard time, as filed.
Thunderstorm Wind, Mahaska
- When
- April 27, 12:30 AM CST
- Where
- Mahaska County
- Measured
- 87 kt (100 mph)
- Coordinates
- 41.470, -92.720
Thunderstorm Wind, Mahaska
- When
- April 27, 12:40 AM CST
- Where
- Mahaska County
- Measured
- 70 kt (81 mph)
- Coordinates
- 41.300, -92.630
Tornado, Iowa
- When
- April 27, 12:55 AM CST
- Where
- Iowa County
- Rating
- F2
- Path length
- 4.5 mi
- Path width
- 50 yd
- Property damage
- $250,000
- Coordinates
- 41.700, -92.300
Thunderstorm Wind, Mahaska
- When
- April 27, 1:00 AM CST
- Where
- Mahaska County
- Coordinates
- 41.480, -92.420
Tornado, Iowa
- When
- April 27, 1:09 AM CST
- Where
- Iowa County
- Rating
- F1
- Path length
- 2 mi
- Path width
- 40 yd
- Property damage
- $250,000
- Coordinates
- 41.730, -92.070
Thunderstorm Wind, Clayton
- When
- April 27, 1:35 AM CST
- Where
- Clayton County
- Coordinates
- 43.000, -91.330
Thunderstorm Wind, Keokuk
- When
- April 27, 1:40 AM CST
- Where
- Keokuk County
- Coordinates
- 41.480, -92.400
Thunderstorm Wind, Delaware
- When
- April 27, 1:48 AM CST
- Where
- Delaware County
- Coordinates
- 42.480, -91.580
Thunderstorm Wind, Linn
- When
- April 27, 1:50 AM CST
- Where
- Linn County
- Injuries
- 1 direct, 0 indirect
- Coordinates
- 41.920, -91.780
Thunderstorm Wind, Buchanan
- When
- April 27, 2:00 AM CST
- Where
- Buchanan County
- Coordinates
- 42.470, -91.680
Thunderstorm Wind, Clayton
- When
- April 27, 2:00 AM CST
- Where
- Clayton County
- Measured
- 70 kt (81 mph)
- Coordinates
- 42.680, -91.530
Thunderstorm Wind, Delaware
- When
- April 27, 2:12 AM CST
- Where
- Delaware County
- Coordinates
- 42.470, -91.580
Thunderstorm Wind, Clayton
- When
- April 27, 2:15 AM CST
- Where
- Clayton County
- Coordinates
- 42.670, -91.430
Thunderstorm Wind, Dubuque
- When
- April 27, 2:30 AM CST
- Where
- Dubuque County
- Coordinates
- 42.600, -90.980
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.
- 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 Georgia, April 27, 1991
- Tornadoes and Hail in Louisiana, April 27, 1991
- Tornadoes and Hail in Texas, April 27, 1991
- Hail and Damaging Winds in Alabama, April 27, 1991
- Tornado and Hail in Arkansas, April 27, 1991
- Hail and Damaging Winds in Mississippi, April 27, 1991
- Hail and Damaging Wind in Missouri, April 27, 1991
- Hail in Oklahoma, April 27, 1991
- Hail in Illinois, April 27, 1991
- Damaging Wind in Wisconsin, April 27, 1991
- Damaging Wind in Michigan, April 27, 1991
More
Every storm in Iowa in 1991Every state in 1991This day in weather historyThe tornado archive for Iowa, 1991Warnings in Iowa, April 1991
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: 10028594, 10028595, 10028596, 10028597, 10028598, 10028599, 10024694, 10024695, 10024696, 10027464, 10027465, 10027466, 10027467, 10027468, 10027469.