Thunderstorm Wind, Winnebago
- When
- August 26, 9:30 PM CST
- Where
- Winnebago County
- Measured
- 60 kt (69 mph)
- Coordinates
- 42.200, -89.080
Tornado and Damaging Winds in Illinois, August 26, 1965
11 thunderstorm wind, 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
- None recorded
- Crop damage
- None recorded
- Events
- 12
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
11 thunderstorm wind, 1 tornado. Local standard time, as filed.
Thunderstorm Wind, Lee
- When
- August 26, 9:35 PM CST
- Where
- Lee County
- Coordinates
- 41.880, -89.080
Thunderstorm Wind, Will
- When
- August 26, 11:00 PM CST
- Where
- Will County
- Measured
- 50 kt (58 mph)
- Coordinates
- 41.500, -88.180
Tornado, Cook
- When
- August 26, 11:10 PM CST
- Where
- Cook County
- Rating
- F1
- Path length
- 2 mi
- Path width
- 70 yd
- Coordinates
- 41.520, -87.680
Thunderstorm Wind, Cook
- When
- August 26, 11:20 PM CST
- Where
- Cook County
- Measured
- 62 kt (71 mph)
- Coordinates
- 41.580, -87.780
Thunderstorm Wind, Will
- When
- August 26, 11:20 PM CST
- Where
- Will County
- Measured
- 79 kt (91 mph)
- Coordinates
- 41.500, -88.180
Thunderstorm Wind, Cook
- When
- August 26, 11:20 PM CST
- Where
- Cook County
- Measured
- 72 kt (83 mph)
- Coordinates
- 41.500, -87.580
Thunderstorm Wind, Cook
- When
- August 26, 11:25 PM CST
- Where
- Cook County
- Coordinates
- 41.880, -87.780
Thunderstorm Wind, Cook
- When
- August 26, 11:30 PM CST
- Where
- Cook County
- Coordinates
- 41.500, -87.580
Thunderstorm Wind, Cook
- When
- August 26, 11:59 PM CST
- Where
- Cook County
- Measured
- 63 kt (72 mph)
- Coordinates
- 41.700, -87.680
Thunderstorm Wind,
- When
- August 26, 11:59 PM CST
- Where
- County
- Coordinates
- 41.880, -87.500
Thunderstorm Wind,
- When
- August 26, 11:59 PM CST
- Where
- County
- Measured
- 60 kt (69 mph)
- Coordinates
- 41.580, -87.180
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.
- 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 Hail in Iowa, August 26, 1965
- Tornado and Hail in Pennsylvania, August 26, 1965
- Hail and Damaging Winds in Maryland, August 26, 1965
- Damaging Wind in South Dakota, August 26, 1965
- Hail in Virginia, August 26, 1965
- Tornado in West Virginia, August 26, 1965
- Hail in Kansas, August 26, 1965
- Hail in Indiana, August 26, 1965
More
Every storm in Illinois in 1965Every state in 1965This day in weather historyThe tornado archive for Illinois, 1965
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: 10007707, 10007708, 10007709, 10007710, 10007711, 10007712, 10007713, 10007714, 10007715, 10007716, 10007717, 10007718.