Tornadoes and Hail in Wisconsin, April 11, 1965

Name: Tornadoes and Hail in Wisconsin, April 11, 1965
Start: 1965-04-11T14:00
End: 1965-04-11T16:14
Location: Wisconsin

April 11, 1965 · 11 events in 7 counties and zones

7 tornado, 3 thunderstorm wind, 1 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

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The toll

Deaths: 3
Injuries: 68
Property damage: $7.8 million
Crop damage: None recorded
Events: 11

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

7 tornado, 3 thunderstorm wind, 1 hail. Local standard time, as filed.

Tornado, Green

When: April 11, 2:00 PM CST
Where: Green County
Rating: F1
Path length: 27.1 mi
Path width: 167 yd
Injuries: 40 direct, 0 indirect
Property damage: $2.5 million
Coordinates: 42.500, -89.800

Tornado, Jefferson

When: April 11, 2:30 PM CST
Where: Jefferson County
Rating: F2
Path length: 14.5 mi
Path width: 1,320 yd
Deaths: 3 direct, 0 indirect
Injuries: 28 direct, 0 indirect
Property damage: $2.5 million
Coordinates: 43.030, -88.880

Thunderstorm Wind, Rock

When: April 11, 2:30 PM CST
Where: Rock County
Coordinates: 42.780, -89.180

Tornado, Crawford

When: April 11, 2:45 PM CST
Where: Crawford County
Rating: F1
Path length: 13.3 mi
Path width: 33 yd
Property damage: $25,000
Coordinates: 43.300, -90.900

Tornado, Rock

When: April 11, 2:54 PM CST
Where: Rock County
Rating: F1
Path length: 18.8 mi
Path width: 167 yd
Property damage: $2.5 million
Coordinates: 42.730, -89.370

Hail, Jefferson

When: April 11, 3:15 PM CST
Where: Jefferson County
Measured: 0.75 in hail
Coordinates: 43.200, -88.680

Thunderstorm Wind, Green

When: April 11, 3:15 PM CST
Where: Green County
Coordinates: 42.580, -89.580

Thunderstorm Wind, Waukesha

When: April 11, 3:30 PM CST
Where: Waukesha County
Measured: 70 kt (81 mph)
Coordinates: 43.080, -88.500

Tornado, Walworth

When: April 11, 3:50 PM CST
Where: Walworth County
Rating: F1
Path length: 1.9 mi
Path width: 50 yd
Property damage: $250,000
Coordinates: 42.570, -88.550

Tornado, Walworth

When: April 11, 3:55 PM CST
Where: Walworth County
Rating: F1
Path length: 1 mi
Path width: 33 yd
Property damage: $25,000
Coordinates: 42.720, -88.700

Tornado, Monroe

When: April 11, 4:14 PM CST
Where: Monroe County
Rating: F1
Path length: 2 mi
Path width: 50 yd
Property damage: $25,000
Coordinates: 43.970, -90.580

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.
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

Every storm in Wisconsin in 1965 Every state in 1965 This day in weather history The tornado archive for Wisconsin, 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: 10145797, 10145798, 10145799, 10145800, 10145801, 10145802, 10145803, 10145804, 10145805, 10145806, 10145807.