Hail, Schuyler
- When
- October 4, 3:40 PM CST
- Where
- Schuyler County
- Measured
- 1.75 in hail
- Coordinates
- 40.080, -90.520
Tornadoes and Hail in Illinois, October 4, 1991
23 thunderstorm wind, 2 hail, 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
- 0
- Property damage
- $250,000
- Crop damage
- None recorded
- Events
- 27
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
23 thunderstorm wind, 2 hail, 2 tornado. Local standard time, as filed.
Hail, Pike
- When
- October 4, 4:02 PM CST
- Where
- Pike County
- Measured
- 1.75 in hail
- Coordinates
- 39.570, -90.730
Thunderstorm Wind, Fulton
- When
- October 4, 4:13 PM CST
- Where
- Fulton County
- Coordinates
- 40.570, -89.920
Thunderstorm Wind, Morgan
- When
- October 4, 4:25 PM CST
- Where
- Morgan County
- Coordinates
- 39.750, -90.250
Thunderstorm Wind, Mason
- When
- October 4, 4:50 PM CST
- Where
- Mason County
- Coordinates
- 40.420, -89.770
Thunderstorm Wind, Calhoun
- When
- October 4, 4:50 PM CST
- Where
- Calhoun County
- Measured
- 52 kt (60 mph)
- Coordinates
- 39.220, -90.620
Thunderstorm Wind, Jersey
- When
- October 4, 5:00 PM CST
- Where
- Jersey County
- Coordinates
- 39.120, -90.320
Thunderstorm Wind, Sangamon
- When
- October 4, 5:00 PM CST
- Where
- Sangamon County
- Measured
- 58 kt (67 mph)
- Coordinates
- 39.800, -89.770
Tornado, Tazewell
- When
- October 4, 5:09 PM CST
- Where
- Tazewell County
- Rating
- F1
- Path length
- 0.4 mi
- Path width
- 20 yd
- Property damage
- $250,000
- Coordinates
- 40.330, -89.420
Thunderstorm Wind, Menard
- When
- October 4, 5:15 PM CST
- Where
- Menard County
- Coordinates
- 40.000, -89.600
Thunderstorm Wind, Logan
- When
- October 4, 5:30 PM CST
- Where
- Logan County
- Coordinates
- 40.300, -89.480
Thunderstorm Wind, Du Page
- When
- October 4, 5:30 PM CST
- Where
- Du Page County
- Coordinates
- 41.930, -88.050
Tornado, McLean
- When
- October 4, 5:34 PM CST
- Where
- McLean County
- Rating
- F1
- Path length
- 0.1 mi
- Path width
- 10 yd
- Coordinates
- 40.580, -89.130
Thunderstorm Wind, Grundy
- When
- October 4, 6:00 PM CST
- Where
- Grundy County
- Coordinates
- 41.370, -88.300
Thunderstorm Wind, De Witt
- When
- October 4, 6:15 PM CST
- Where
- De Witt County
- Coordinates
- 40.150, -89.030
Thunderstorm Wind, Livingston
- When
- October 4, 6:20 PM CST
- Where
- Livingston County
- Measured
- 50 kt (58 mph)
- Coordinates
- 40.750, -88.280
Thunderstorm Wind, Livingston
- When
- October 4, 6:20 PM CST
- Where
- Livingston County
- Measured
- 50 kt (58 mph)
- Coordinates
- 41.080, -88.430
Thunderstorm Wind, Christian
- When
- October 4, 6:29 PM CST
- Where
- Christian County
- Coordinates
- 39.550, -89.300
Thunderstorm Wind, Ford
- When
- October 4, 6:35 PM CST
- Where
- Ford County
- Coordinates
- 40.880, -88.120
Thunderstorm Wind, Iroquois
- When
- October 4, 6:35 PM CST
- Where
- Iroquois County
- Coordinates
- 40.880, -88.000
Thunderstorm Wind, Macoupin
- When
- October 4, 6:37 PM CST
- Where
- Macoupin County
- Coordinates
- 39.280, -89.880
Thunderstorm Wind, Macon
- When
- October 4, 6:45 PM CST
- Where
- Macon County
- Measured
- 55 kt (63 mph)
- Coordinates
- 39.850, -88.950
Thunderstorm Wind, Kankakee
- When
- October 4, 6:50 PM CST
- Where
- Kankakee County
- Coordinates
- 41.120, -87.850
Thunderstorm Wind, Will
- When
- October 4, 7:00 PM CST
- Where
- Will County
- Coordinates
- 41.420, -87.980
Thunderstorm Wind, Piatt
- When
- October 4, 7:06 PM CST
- Where
- Piatt County
- Coordinates
- 40.030, -88.570
Thunderstorm Wind, Kankakee
- When
- October 4, 7:10 PM CST
- Where
- Kankakee County
- Coordinates
- 41.130, -87.870
Thunderstorm Wind, Champaign
- When
- October 4, 7:15 PM CST
- Where
- Champaign County
- Coordinates
- 40.200, -88.450
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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
- Hail and Damaging Winds in Missouri, October 4, 1991
- Damaging Winds in Indiana, October 4, 1991
- Hail and Damaging Winds in Arkansas, October 4, 1991
- Hail in Texas, October 4, 1991
- Hail in Oklahoma, October 4, 1991
- Hail and Damaging Winds in New York, October 4, 1991
- Hail in Ohio, October 4, 1991
- Damaging Winds in Michigan, October 4, 1991
- Damaging Wind in Louisiana, October 4, 1991
More
Every storm in Illinois in 1991Every state in 1991This day in weather historyThe tornado archive for Illinois, 1991Warnings in Illinois, October 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: 10003950, 10003951, 10003952, 10003953, 10003954, 10003955, 10003956, 10003957, 10003958, 10003959, 10003960, 10003961, 10003962, 10003963, 10003964, 10003965, 10003966, 10003967, 10003968, 10003969, 10003970, 10003971, 10003972, 10003973, 10003974, 10003975, 10003976.