Tornado record · Original Fujita scale
F4 tornado, Fond du Lac County, Wisconsin, April 21, 1974
RatingF4
Deaths0
Injuries35
Length26 mi
Width200 yd
Path
Drawn as a straight line from the recorded start point (43.75, -88.83) to the end point (44.07, -88.53), which is all NOAA's record holds. The real track may have curved.
The record
- Date
- April 21, 1974, 2:40 PM (as recorded, Central Standard Time)
- Rating
- F4
- States
- Wisconsin
- Counties
- Fond du Lac County, Winnebago County
- Path
- 26 miles long, up to 200 yards wide
- Casualties
- 0 deaths, 35 injuries
Other tornadoes on April 21, 1974
| Date | Rating | State | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| Apr 21, 1974 | F3 | Wisconsin | 22.2 mi | 200 yd | 0 | 0 |
| Apr 21, 1974 | F3 | Wisconsin | 58.6 mi | 200 yd | 2 | 18 |
| Apr 21, 1974 | F2 | Illinois | 2 mi | 50 yd | 0 | 0 |
| Apr 21, 1974 | F2 | Wisconsin | 2.7 mi | 200 yd | 0 | 0 |
| Apr 21, 1974 | F2 | Texas | 0.3 mi | 10 yd | 0 | 0 |
| Apr 21, 1974 | F2 | Texas | 1 mi | 10 yd | 0 | 6 |
| Apr 21, 1974 | F2 | Texas | 1 mi | 200 yd | 0 | 0 |
| Apr 21, 1974 | F1 | Texas | 0.1 mi | 10 yd | 0 | 1 |
| Apr 21, 1974 | F1 | Illinois | 0.1 mi | 10 yd | 0 | 2 |
| Apr 21, 1974 | F1 | Michigan | 0.1 mi | 10 yd | 0 | 0 |
| Apr 21, 1974 | F1 | Arkansas | 4.7 mi | 100 yd | 0 | 0 |
| Apr 21, 1974 | F1 | Illinois | 0.1 mi | 10 yd | 0 | 0 |
| Apr 21, 1974 | F1 | Texas | 1 mi | 10 yd | 0 | 0 |
Tornado history nearby
Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025.