Hail, Winnebago
- When
- August 18, 2:30 PM CST
- Where
- Winnebago County
- Measured
- 1.75 in hail
- Coordinates
- 42.330, -89.080
Hail and Damaging Winds in Illinois, August 18, 1988
4 thunderstorm wind, 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
- None recorded
- Crop damage
- None recorded
- Events
- 5
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
4 thunderstorm wind, 1 hail. Local standard time, as filed.
Thunderstorm Wind, Mercer
- When
- August 18, 3:00 PM CST
- Where
- Mercer County
- Coordinates
- 41.200, -90.750
Thunderstorm Wind, Rock Island
- When
- August 18, 3:07 PM CST
- Where
- Rock Island County
- Measured
- 54 kt (62 mph)
- Coordinates
- 41.500, -90.520
Thunderstorm Wind, Cook
- When
- August 18, 4:06 PM CST
- Where
- Cook County
- Coordinates
- 42.130, -87.900
Thunderstorm Wind, Fulton
- When
- August 18, 5:50 PM CST
- Where
- Fulton County
- Coordinates
- 40.700, -90.000
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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Damaging Winds in Indiana, August 18, 1988
- Damaging Winds in Iowa, August 18, 1988
- Hail and Damaging Wind in Michigan, August 18, 1988
- Damaging Winds in Montana, August 18, 1988
- Damaging Winds in Wisconsin, August 18, 1988
- Damaging Winds in Ohio, August 18, 1988
- Damaging Wind in Virginia, August 18, 1988
- Damaging Wind in Missouri, August 18, 1988
- Damaging Wind in Colorado, August 18, 1988
- Damaging Wind in Kansas, August 18, 1988
- Damaging Wind in Texas, August 18, 1988
- Damaging Wind in Arizona, August 18, 1988
More
Every storm in Illinois in 1988Every state in 1988This day in weather historyWarnings in Illinois, August 1988
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: 10003768, 10003769, 10003770, 10003771, 10003772.