Tornado record · Enhanced Fujita scale
EF0 tornado, Boone County, Iowa, August 21, 2017
RatingEF0
Deaths0
Injuries0
Length3.28 mi
Width80 yd
Path
Drawn as a straight line from the recorded start point (41.95, -93.73) to the end point (41.92, -93.67), which is all NOAA's record holds. The real track may have curved.
The record
- Date
- August 21, 2017, 4:52 PM (as recorded, Central Standard Time)
- Rating
- EF0
- States
- Iowa
- Counties
- Boone County, Story County
- Path
- 3.28 miles long, up to 80 yards wide
- Casualties
- 0 deaths, 0 injuries
Other tornadoes on August 21, 2017
| Date | Rating | State | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| Aug 21, 2017 | EF0 | Iowa | 1.08 mi | 10 yd | 0 | 0 |
Tornado history nearby
Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025.