Tornado, Rock Island
- When
- August 5, 8:50 AM CST
- Where
- Rock Island County
- Rating
- F0
- Path length
- 0.2 mi
- Path width
- 10 yd
- Coordinates
- 41.520, -90.420
Tornadoes and Hail in Illinois, August 5, 1979
5 hail, 2 tornado, 1 thunderstorm wind, 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
- $2.5 million
- Crop damage
- None recorded
- Events
- 8
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
5 hail, 2 tornado, 1 thunderstorm wind. Local standard time, as filed.
Hail, La Salle
- When
- August 5, 1:55 PM CST
- Where
- La Salle County
- Measured
- 0.75 in hail
- Coordinates
- 41.550, -89.120
Hail, La Salle
- When
- August 5, 1:55 PM CST
- Where
- La Salle County
- Measured
- 0.75 in hail
- Coordinates
- 41.500, -89.020
Hail, Lake
- When
- August 5, 3:25 PM CST
- Where
- Lake County
- Measured
- 1 in hail
- Coordinates
- 42.420, -88.030
Tornado, Ogle
- When
- August 5, 4:45 PM CST
- Where
- Ogle County
- Rating
- F3
- Path length
- 5.7 mi
- Path width
- 67 yd
- Property damage
- $2.5 million
- Coordinates
- 42.020, -89.580
Hail, Rock Island
- When
- August 5, 7:50 PM CST
- Where
- Rock Island County
- Measured
- 0.75 in hail
- Coordinates
- 41.620, -90.330
Hail, Rock Island
- When
- August 5, 7:53 PM CST
- Where
- Rock Island County
- Measured
- 1.5 in hail
- Coordinates
- 41.520, -90.420
Thunderstorm Wind, Iroquois
- When
- August 5, 9:00 PM CST
- Where
- Iroquois County
- Coordinates
- 40.920, -87.720
What these are
- 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.
- 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
- Tornadoes and Hail in Iowa, August 5, 1979
- Tornado and Damaging Wind in Florida, August 5, 1979
- Hail and Damaging Winds in Indiana, August 5, 1979
- Hail and Damaging Wind in Wisconsin, August 5, 1979
- Damaging Winds in Ohio, August 5, 1979
- Hail in Minnesota, August 5, 1979
- Hail in Michigan, August 5, 1979
- Damaging Wind in Louisiana, August 5, 1979
More
Every storm in Illinois in 1979Every state in 1979This day in weather historyThe tornado archive for Illinois, 1979
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: 10007083, 10007084, 10007085, 10007086, 10007087, 10007088, 10007089, 10007090.