Tornado record · Original Fujita scale
F4 tornado, Butler County, Iowa, September 1, 1961
RatingF4
Deaths0
Injuries7
Length26.6 mi
Width27 yd
Path
Drawn as a straight line from the recorded start point (42.78, -93.00) to the end point (42.88, -92.47), which is all NOAA's record holds. The real track may have curved.
The record
- Date
- September 1, 1961, 6:00 PM (as recorded, Central Standard Time)
- Rating
- F4
- States
- Iowa
- Counties
- Butler County, Bremer County
- Path
- 26.6 miles long, up to 27 yards wide
- Casualties
- 0 deaths, 7 injuries
Other tornadoes on September 1, 1961
| Date | Rating | State | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| Sep 1, 1961 | F2 | Iowa | 1 mi | 30 yd | 0 | 0 |
| Sep 1, 1961 | F1 | Minnesota | 9.8 mi | 250 yd | 0 | 1 |
| Sep 1, 1961 | F1 | Illinois | 0.1 mi | 100 yd | 0 | 4 |
Tornado history nearby
Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025.