Hail, Rock Island
- When
- July 18, 7:00 PM CST
- Where
- Rock Island County
- Measured
- 0.75 in hail
- Coordinates
- 41.380, -90.580
Tornado and Hail in Illinois, July 18, 1971
1 hail, 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
- $25,000
- Crop damage
- None recorded
- Events
- 2
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
1 hail, 1 tornado. Local standard time, as filed.
Tornado, McDonough
- When
- July 18, 8:20 PM CST
- Where
- McDonough County
- Rating
- F1
- Path width
- 33 yd
- Property damage
- $25,000
- Coordinates
- 40.430, -90.700
What these are
- 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.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Damaging Winds in Wisconsin, July 18, 1971
- Tornado and Damaging Winds in Kentucky, July 18, 1971
- Tornado in Texas, July 18, 1971
- Tornado and Damaging Wind in Minnesota, July 18, 1971
- Hail and Damaging Winds in Missouri, July 18, 1971
- Damaging Winds in Iowa, July 18, 1971
- Damaging Wind in Indiana, July 18, 1971
More
Every storm in Illinois in 1971Every state in 1971This day in weather historyThe tornado archive for Illinois, 1971
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: 10011233, 10011234.