Tornado, Knox
- When
- August 3, 3:05 PM EST
- Where
- Knox County
- Rating
- F1
- Path length
- 0.5 mi
- Path width
- 50 yd
- Property damage
- $25,000
- Coordinates
- 38.600, -87.520
Tornado and Hail in Indiana, August 3, 1991
21 thunderstorm wind, 1 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $25,000
- Crop damage
- None recorded
- 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
21 thunderstorm wind, 1 tornado, 1 hail. Local standard time, as filed.
Thunderstorm Wind, Knox
- When
- August 3, 3:02 PM CST
- Where
- Knox County
- Coordinates
- 38.870, -87.430
Thunderstorm Wind, Daviess
- When
- August 3, 3:20 PM CST
- Where
- Daviess County
- Coordinates
- 38.670, -87.170
Thunderstorm Wind, Greene
- When
- August 3, 3:43 PM CST
- Where
- Greene County
- Coordinates
- 39.030, -86.930
Thunderstorm Wind, Martin
- When
- August 3, 3:44 PM CST
- Where
- Martin County
- Coordinates
- 38.670, -86.780
Thunderstorm Wind, Orange
- When
- August 3, 4:45 PM CST
- Where
- Orange County
- Coordinates
- 38.550, -86.470
Thunderstorm Wind, Washington
- When
- August 3, 5:00 PM CST
- Where
- Washington County
- Coordinates
- 38.620, -86.120
Thunderstorm Wind, Morgan
- When
- August 3, 5:11 PM CST
- Where
- Morgan County
- Coordinates
- 39.480, -86.450
Hail, Ripley
- When
- August 3, 5:28 PM CST
- Where
- Ripley County
- Measured
- 1 in hail
- Coordinates
- 39.080, -85.350
Thunderstorm Wind, Johnson
- When
- August 3, 5:30 PM CST
- Where
- Johnson County
- Coordinates
- 39.500, -86.120
Thunderstorm Wind, Scott
- When
- August 3, 5:40 PM CST
- Where
- Scott County
- Coordinates
- 38.730, -85.780
Thunderstorm Wind, Jefferson
- When
- August 3, 5:42 PM CST
- Where
- Jefferson County
- Coordinates
- 38.800, -85.470
Thunderstorm Wind, Dearborn
- When
- August 3, 5:45 PM CST
- Where
- Dearborn County
- Coordinates
- 39.070, -85.070
Thunderstorm Wind, Marion
- When
- August 3, 5:57 PM CST
- Where
- Marion County
- Measured
- 54 kt (62 mph)
- Coordinates
- 39.650, -86.080
Thunderstorm Wind, Dearborn
- When
- August 3, 6:00 PM CST
- Where
- Dearborn County
- Coordinates
- 39.120, -85.080
Thunderstorm Wind, Shelby
- When
- August 3, 6:15 PM CST
- Where
- Shelby County
- Coordinates
- 39.520, -85.800
Thunderstorm Wind, Switzerland
- When
- August 3, 6:50 PM CST
- Where
- Switzerland County
- Coordinates
- 38.780, -85.020
Thunderstorm Wind, Fayette
- When
- August 3, 7:05 PM CST
- Where
- Fayette County
- Coordinates
- 39.650, -85.130
Thunderstorm Wind, Dearborn
- When
- August 3, 7:40 PM CST
- Where
- Dearborn County
- Measured
- 52 kt (60 mph)
- Coordinates
- 39.130, -84.930
Thunderstorm Wind, Brown
- When
- August 3, 8:10 PM CST
- Where
- Brown County
- Coordinates
- 39.270, -86.250
Thunderstorm Wind, Bartholomew
- When
- August 3, 8:28 PM CST
- Where
- Bartholomew County
- Coordinates
- 39.200, -85.880
Thunderstorm Wind, Jackson
- When
- August 3, 8:50 PM CST
- Where
- Jackson County
- Coordinates
- 38.970, -85.900
Thunderstorm Wind, Jennings
- When
- August 3, 8:50 PM CST
- Where
- Jennings County
- Coordinates
- 38.980, -85.630
What these are
- 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.
- 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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Hail in Pennsylvania, August 3, 1991
- Tornado and Hail in Illinois, August 3, 1991
- Hail and Damaging Winds in Missouri, August 3, 1991
- Damaging Winds in Ohio, August 3, 1991
- Damaging Winds in Kentucky, August 3, 1991
- Hail and Damaging Winds in New Jersey, August 3, 1991
- Hail in Arizona, August 3, 1991
More
Every storm in Indiana in 1991Every state in 1991This day in weather historyThe tornado archive for Indiana, 1991Warnings in Indiana, August 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: 10017989, 10017988, 10017990, 10017991, 10017992, 10017993, 10017994, 10017995, 10017996, 10017997, 10017998, 10017999, 10018000, 10018001, 10018002, 10018003, 10018004, 10018005, 10018006, 10018007, 10018008, 10018009, 10018010.