Illinois, 1970Damaging Winds in Illinois, July 31, 1970
July 31, 1970 · 5 events in 4 counties and zones
5 thunderstorm wind, as filed by the National Weather Service.
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
Open the live radar over this ground
- 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.
Thunderstorm Wind, Sangamon
- When
- July 31, 2:34 AM CST
- Where
- Sangamon County
- Coordinates
- 39.580, -89.680
Thunderstorm Wind, Rock Island
- When
- July 31, 6:31 PM CST
- Where
- Rock Island County
- Measured
- 61 kt (70 mph)
- Coordinates
- 41.380, -90.680
Thunderstorm Wind, Rock Island
- When
- July 31, 6:38 PM CST
- Where
- Rock Island County
- Measured
- 68 kt (78 mph)
- Coordinates
- 41.500, -90.500
Thunderstorm Wind, Hancock
- When
- July 31, 7:45 PM CST
- Where
- Hancock County
- Coordinates
- 40.500, -91.080
Thunderstorm Wind, McLean
- When
- July 31, 9:00 PM CST
- Where
- McLean County
- Coordinates
- 40.580, -88.780
- 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.
- Tornado and Damaging Winds in Iowa, July 31, 1970$25,000 · F1 · 7 events
- Tornado in Pennsylvania, July 31, 1970$3,000 · F1 · 1 event
- Hail and Damaging Winds in Kansas, July 31, 19702.75 in hail · 12 events
- Hail and Damaging Winds in Wisconsin, July 31, 19701 in hail · 4 events
- Damaging Winds in Missouri, July 31, 19704 events
- Damaging Winds in Indiana, July 31, 19702 events
- Hail in Minnesota, July 31, 19701 in hail · 1 event
- Tornado in Colorado, July 31, 1970F0 · 1 event
- Damaging Wind in Mississippi, July 31, 19701 event
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: 10010091, 10010092, 10010093, 10010948, 10011165.