Tornado record · Original Fujita scale
F2 tornado, Winnebago County, Iowa, August 9, 1999
RatingF2
Deaths0
Injuries0
Length11.5 mi
Width40 yd
Path
Drawn as a straight line from the recorded start point (43.47, -93.62) to the end point (43.40, -93.52), which is all NOAA's record holds. The real track may have curved.
The record
- Date
- August 9, 1999, 8:02 PM (as recorded, Central Standard Time)
- Rating
- F2
- States
- Iowa
- Counties
- Winnebago County, Worth County
- Path
- 11.5 miles long, up to 40 yards wide
- Casualties
- 0 deaths, 0 injuries
Other tornadoes on August 9, 1999
| Date | Rating | State | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| Aug 9, 1999 | F1 | Minnesota | 0.3 mi | n/a | 0 | 0 |
| Aug 9, 1999 | F1 | Minnesota | 0.8 mi | n/a | 0 | 0 |
| Aug 9, 1999 | F1 | Minnesota | 9 mi | 50 yd | 0 | 0 |
| Aug 9, 1999 | F0 | Minnesota | 0.1 mi | n/a | 0 | 0 |
| Aug 9, 1999 | F0 | Minnesota | 2.5 mi | n/a | 0 | 0 |
| Aug 9, 1999 | F0 | Minnesota | 0.8 mi | n/a | 0 | 0 |
| Aug 9, 1999 | F0 | Minnesota | 1 mi | 50 yd | 0 | 0 |
| Aug 9, 1999 | F0 | Minnesota | 0.1 mi | n/a | 0 | 0 |
| Aug 9, 1999 | F0 | Minnesota | 1 mi | 50 yd | 0 | 0 |
| Aug 9, 1999 | F0 | Minnesota | 0.1 mi | n/a | 0 | 0 |
| Aug 9, 1999 | F0 | Iowa | 0.1 mi | n/a | 0 | 0 |
Tornado history nearby
Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025.