Thunderstorm Wind, Carroll
- When
- May 11, 1:28 PM CST
- Where
- Carroll County
- Measured
- 61 kt (70 mph)
- Coordinates
- 42.070, -94.880
Tornadoes and Hail in Iowa, May 11, 1985
17 thunderstorm wind, 5 hail, 4 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
- 4
- Property damage
- $100,000
- Crop damage
- None recorded
- Events
- 26
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, 4 tornado. Local standard time, as filed.
Thunderstorm Wind, Adair
- When
- May 11, 1:30 PM CST
- Where
- Adair County
- Coordinates
- 41.300, -94.470
Thunderstorm Wind, Carroll
- When
- May 11, 1:48 PM CST
- Where
- Carroll County
- Measured
- 61 kt (70 mph)
- Coordinates
- 42.070, -94.880
Thunderstorm Wind, Ringgold
- When
- May 11, 2:00 PM CST
- Where
- Ringgold County
- Coordinates
- 40.850, -94.200
Tornado, Polk
- When
- May 11, 2:58 PM CST
- Where
- Polk County
- Rating
- F0
- Path length
- 1 mi
- Path width
- 50 yd
- Property damage
- $25,000
- Coordinates
- 41.520, -93.430
Thunderstorm Wind, Wayne
- When
- May 11, 3:12 PM CST
- Where
- Wayne County
- Coordinates
- 40.730, -93.350
Tornado, Marion
- When
- May 11, 3:40 PM CST
- Where
- Marion County
- Rating
- F1
- Path length
- 1 mi
- Path width
- 50 yd
- Property damage
- $25,000
- Coordinates
- 41.270, -92.880
Tornado, Mahaska
- When
- May 11, 3:42 PM CST
- Where
- Mahaska County
- Rating
- F1
- Path length
- 1 mi
- Path width
- 50 yd
- Injuries
- 4 direct, 0 indirect
- Property damage
- $25,000
- Coordinates
- 41.270, -92.870
Hail, Monroe
- When
- May 11, 4:03 PM CST
- Where
- Monroe County
- Measured
- 1.75 in hail
- Coordinates
- 40.970, -93.030
Hail, Harrison
- When
- May 11, 4:05 PM CST
- Where
- Harrison County
- Measured
- 0.75 in hail
- Coordinates
- 41.800, -96.030
Thunderstorm Wind, Harrison
- When
- May 11, 4:05 PM CST
- Where
- Harrison County
- Coordinates
- 41.800, -96.030
Tornado, Poweshiek
- When
- May 11, 4:15 PM CST
- Where
- Poweshiek County
- Rating
- F0
- Path length
- 1 mi
- Path width
- 20 yd
- Property damage
- $25,000
- Coordinates
- 41.520, -92.450
Hail, Iowa
- When
- May 11, 4:36 PM CST
- Where
- Iowa County
- Measured
- 1.75 in hail
- Coordinates
- 41.750, -92.180
Thunderstorm Wind, Montgomery
- When
- May 11, 5:00 PM CST
- Where
- Montgomery County
- Measured
- 74 kt (85 mph)
- Coordinates
- 41.020, -95.230
Thunderstorm Wind, Fremont
- When
- May 11, 5:00 PM CST
- Where
- Fremont County
- Coordinates
- 40.870, -95.570
Thunderstorm Wind, Fremont
- When
- May 11, 5:00 PM CST
- Where
- Fremont County
- Coordinates
- 40.750, -95.800
Thunderstorm Wind, Davis
- When
- May 11, 5:05 PM CST
- Where
- Davis County
- Measured
- 54 kt (62 mph)
- Coordinates
- 40.730, -92.420
Thunderstorm Wind, Mills
- When
- May 11, 5:05 PM CST
- Where
- Mills County
- Measured
- 52 kt (60 mph)
- Coordinates
- 41.020, -95.520
Hail, Iowa
- When
- May 11, 5:30 PM CST
- Where
- Iowa County
- Measured
- 1.75 in hail
- Coordinates
- 41.520, -92.080
Thunderstorm Wind, Cass
- When
- May 11, 5:30 PM CST
- Where
- Cass County
- Coordinates
- 41.400, -95.020
Thunderstorm Wind, Van Buren
- When
- May 11, 5:34 PM CST
- Where
- Van Buren County
- Coordinates
- 40.670, -92.170
Thunderstorm Wind, Van Buren
- When
- May 11, 5:37 PM CST
- Where
- Van Buren County
- Coordinates
- 40.730, -91.950
Thunderstorm Wind, Van Buren
- When
- May 11, 6:03 PM CST
- Where
- Van Buren County
- Coordinates
- 40.730, -91.950
Thunderstorm Wind, Louisa
- When
- May 11, 7:35 PM CST
- Where
- Louisa County
- Measured
- 65 kt (75 mph)
- Coordinates
- 41.200, -91.250
Hail, Muscatine
- When
- May 11, 7:40 PM CST
- Where
- Muscatine County
- Measured
- 1.75 in hail
- Coordinates
- 41.420, -91.050
Thunderstorm Wind, Dubuque
- When
- May 11, 8:05 PM CST
- Where
- Dubuque County
- Coordinates
- 42.570, -90.720
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.
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Damaging Winds in Wisconsin, May 11, 1985
- Tornadoes and Hail in South Dakota, May 11, 1985
- Tornado and Hail in Texas, May 11, 1985
- Tornado and Hail in Minnesota, May 11, 1985
- Hail and Damaging Winds in Missouri, May 11, 1985
- Tornado and Damaging Winds in Nebraska, May 11, 1985
- Damaging Wind in Kansas, May 11, 1985
- Damaging Wind in Illinois, May 11, 1985
More
Every storm in Iowa in 1985Every state in 1985This day in weather historyThe tornado archive for Iowa, 1985
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: 10018244, 10018245, 10018246, 10018247, 10018248, 10018249, 10018250, 10018251, 10018252, 10018253, 10018254, 10018255, 10018256, 10018257, 10018258, 10018259, 10018260, 10018261, 10018262, 10018263, 10018264, 10018265, 10018266, 10018267, 10014798, 10014799.