Illinois, 1984Tornadoes and Hail in Illinois, April 27, 1984
April 27, 1984 · NWS MT · 17 events in 14 counties and zones
11 hail, 5 tornado, 1 thunderstorm wind, as filed by the National Weather Service.
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
Open the live radar over this ground
- Deaths
- 1
- Injuries
- 5
- Property damage
- $5.3 million
- Crop damage
- None recorded
- Events
- 17
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
11 hail, 5 tornado, 1 thunderstorm wind. Local standard time, as filed.
Hail, Macoupin
- When
- April 27, 1:18 PM CST
- Where
- Macoupin County
- Measured
- 1 in hail
- Coordinates
- 39.030, -89.950
Hail, Macoupin
- When
- April 27, 1:40 PM CST
- Where
- Macoupin County
- Measured
- 1.75 in hail
- Coordinates
- 39.130, -89.830
Hail, Christian
- When
- April 27, 3:30 PM CST
- Where
- Christian County
- Measured
- 0.75 in hail
- Coordinates
- 39.480, -89.200
Hail, Shelby
- When
- April 27, 4:38 PM CST
- Where
- Shelby County
- Measured
- 1 in hail
- Coordinates
- 39.430, -88.800
Hail, De Kalb
- When
- April 27, 4:55 PM CST
- Where
- De Kalb County
- Measured
- 1 in hail
- Coordinates
- 41.880, -88.750
Tornado, Grundy
- When
- April 27, 5:10 PM CST
- Where
- Grundy County
- Rating
- F1
- Path length
- 2.7 mi
- Path width
- 150 yd
- Property damage
- $250,000
- Coordinates
- 41.430, -88.300
Hail, Kane
- When
- April 27, 5:12 PM CST
- Where
- Kane County
- Measured
- 0.75 in hail
- Coordinates
- 41.930, -88.380
Hail, Cumberland
- When
- April 27, 5:29 PM CST
- Where
- Cumberland County
- Measured
- 1.75 in hail
- Coordinates
- 39.220, -88.170
Hail, Marion
- When
- April 27, 5:32 PM CST
- Where
- Marion County
- Measured
- 0.75 in hail
- Coordinates
- 38.530, -89.130
Tornado, Kendall
- When
- April 27, 5:39 PM CST
- Where
- Kendall County
- Rating
- F3
- Path length
- 5 mi
- Path width
- 200 yd
- Property damage
- $2.5 million
- Coordinates
- 41.550, -88.330
Thunderstorm Wind, McHenry
- When
- April 27, 5:40 PM CST
- Where
- McHenry County
- Measured
- 59 kt (68 mph)
- Coordinates
- 42.320, -88.450
Tornado, Will
- When
- April 27, 5:50 PM CST
- Where
- Will County
- Rating
- F3
- Path length
- 4 mi
- Path width
- 200 yd
- Deaths
- 1 direct, 0 indirect
- Injuries
- 5 direct, 0 indirect
- Property damage
- $2.5 million
- Coordinates
- 41.580, -88.250
Hail, Marion
- When
- April 27, 5:50 PM CST
- Where
- Marion County
- Measured
- 0.75 in hail
- Coordinates
- 38.720, -88.870
Tornado, Will
- When
- April 27, 6:10 PM CST
- Where
- Will County
- Rating
- F1
- Path length
- 1 mi
- Path width
- 100 yd
- Property damage
- $25,000
- Coordinates
- 41.430, -88.230
Hail, Clay
- When
- April 27, 6:30 PM CST
- Where
- Clay County
- Measured
- 1 in hail
- Coordinates
- 38.830, -88.620
Tornado, Effingham
- When
- April 27, 6:35 PM CST
- Where
- Effingham County
- Rating
- F0
- Path length
- 0.3 mi
- Path width
- 30 yd
- Property damage
- $30
- Coordinates
- 39.120, -88.530
Hail, Clark
- When
- April 27, 8:30 PM CST
- Where
- Clark County
- Measured
- 1.75 in hail
- Coordinates
- 39.470, -87.600
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Tornadoes and Hail in Wisconsin, April 27, 19843 deaths · 42 injured · $68 million · F4 · 54 events
- Tornadoes and Hail in Oklahoma, April 27, 1984$2.8 million · F2 · 4 events
- Tornado in Kansas, April 27, 1984$250,000 · F2 · 1 event
- Tornado and Hail in Michigan, April 27, 1984$25,000 · F1 · 3 events
- Damaging Winds in Minnesota, April 27, 198474 kt wind · 36 events
- Hail and Damaging Winds in Iowa, April 27, 19842 injured · 1.75 in hail · 13 events
- Hail and Damaging Winds in Georgia, April 27, 19841.75 in hail · 5 events
- Tornado and Hail in Missouri, April 27, 1984F0 · 3 events
- Hail and Damaging Wind in Indiana, April 27, 19841.75 in hail · 3 events
- Hail and Damaging Wind in Arkansas, April 27, 19841.75 in hail · 3 events
- Damaging Winds in South Dakota, April 27, 19842 events
- Damaging Wind in Alabama, April 27, 19841 event
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: 10004407, 10004408, 10004409, 10004410, 10004411, 10004412, 10004413, 10004414, 10004415, 10004416, 10004417, 10004418, 10004419, 10004420, 10004421, 10004422, 10004423.