Thunderstorm Wind, Henry
- When
- May 20, 4:20 PM CST
- Where
- Henry County
- Measured
- 70 kt (81 mph)
- Coordinates
- 41.230, -89.930
Tornado and Damaging Winds in Illinois, May 20, 1987
8 thunderstorm wind, 1 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
- $3,000
- Crop damage
- None recorded
- Events
- 9
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
8 thunderstorm wind, 1 tornado. Local standard time, as filed.
Thunderstorm Wind, Rock Island
- When
- May 20, 5:00 PM CST
- Where
- Rock Island County
- Measured
- 70 kt (81 mph)
- Coordinates
- 41.500, -90.520
Thunderstorm Wind, Whiteside
- When
- May 20, 5:30 PM CST
- Where
- Whiteside County
- Measured
- 70 kt (81 mph)
- Coordinates
- 41.750, -89.900
Thunderstorm Wind, Peoria
- When
- May 20, 5:30 PM CST
- Where
- Peoria County
- Coordinates
- 40.920, -89.480
Tornado, Woodford
- When
- May 20, 5:43 PM CST
- Where
- Woodford County
- Rating
- F1
- Path length
- 0.5 mi
- Path width
- 50 yd
- Property damage
- $3,000
- Coordinates
- 40.750, -89.300
Thunderstorm Wind, Woodford
- When
- May 20, 6:10 PM CST
- Where
- Woodford County
- Coordinates
- 40.780, -89.230
Thunderstorm Wind, Adams
- When
- May 20, 7:10 PM CST
- Where
- Adams County
- Coordinates
- 39.930, -91.400
Thunderstorm Wind, La Salle
- When
- May 20, 8:15 PM CST
- Where
- La Salle County
- Measured
- 52 kt (60 mph)
- Coordinates
- 41.120, -88.830
Thunderstorm Wind, Ford
- When
- May 20, 9:30 PM CST
- Where
- Ford County
- Coordinates
- 40.580, -88.380
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 Iowa, May 20, 1987
- Tornado and Hail in Minnesota, May 20, 1987
- Hail and Damaging Winds in Texas, May 20, 1987
- Hail and Damaging Winds in Indiana, May 20, 1987
- Hail and Damaging Wind in Colorado, May 20, 1987
- Hail and Damaging Wind in Oklahoma, May 20, 1987
- Hail and Damaging Winds in Missouri, May 20, 1987
- Hail in Utah, May 20, 1987
- Damaging Winds in Ohio, May 20, 1987
- Hail and Damaging Wind in Arkansas, May 20, 1987
- Damaging Wind in Tennessee, May 20, 1987
More
Every storm in Illinois in 1987Every state in 1987This day in weather historyThe tornado archive for Illinois, 1987Warnings in Illinois, May 1987
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: 10003685, 10003686, 10003687, 10003688, 10003689, 10003690, 10003691, 10003692, 10003693.