Thunderstorm Wind, Mercer
- When
- July 30, 5:31 AM CST
- Where
- Mercer County
- Measured
- 53 kt (61 mph)
- Coordinates
- 41.200, -90.780
Hail and Damaging Winds in Illinois, July 30, 1979
4 thunderstorm wind, 2 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
- 6
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, 2 hail. Local standard time, as filed.
Thunderstorm Wind, Rock Island
- When
- July 30, 5:31 AM CST
- Where
- Rock Island County
- Measured
- 53 kt (61 mph)
- Coordinates
- 41.500, -90.520
Hail, Champaign
- When
- July 30, 3:25 PM CST
- Where
- Champaign County
- Measured
- 0.75 in hail
- Coordinates
- 40.320, -88.150
Thunderstorm Wind, Logan
- When
- July 30, 5:20 PM CST
- Where
- Logan County
- Coordinates
- 40.150, -89.370
Hail, Champaign
- When
- July 30, 7:00 PM CST
- Where
- Champaign County
- Measured
- 1 in hail
- Coordinates
- 40.120, -88.250
Thunderstorm Wind, St. Clair
- When
- July 30, 7:30 PM CST
- Where
- St. Clair County
- Coordinates
- 38.530, -90.020
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.
- 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 Damaging Winds in Iowa, July 30, 1979
- Tornado and Damaging Wind in Ohio, July 30, 1979
- Damaging Winds in Missouri, July 30, 1979
- Hail and Damaging Winds in Colorado, July 30, 1979
- Damaging Winds in Nebraska, July 30, 1979
- Tornadoes and Hail in Wyoming, July 30, 1979
- Hail and Damaging Winds in Kansas, July 30, 1979
- Damaging Winds in Oklahoma, July 30, 1979
- Damaging Wind in Wisconsin, July 30, 1979
- Hail in Indiana, July 30, 1979
- Hail in Texas, July 30, 1979
More
Every storm in Illinois in 1979Every state in 1979This day in weather history
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: 10007075, 10007076, 10007077, 10007078, 10007079, 10007080.