Tornado record · Original Fujita scale
F1 tornado, Johnson County, Wyoming, August 11, 1999
RatingF1
Deaths0
Injuries0
Length0.2 mi
Widthn/a
Path
Drawn as a straight line from the recorded start point (43.85, -106.18) to the end point (43.85, -106.18), which is all NOAA's record holds. The real track may have curved.
The record
- Date
- August 11, 1999, 7:21 PM (as recorded, Central Standard Time)
- Rating
- F1
- States
- Wyoming
- Counties
- Johnson County
- Path
- 0.2 miles long
- Casualties
- 0 deaths, 0 injuries
Other tornadoes on August 11, 1999
| Date | Rating | State | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| Aug 11, 1999 | F2 | Utah | 4.3 mi | 150 yd | 1 | 80 |
| Aug 11, 1999 | F1 | North Dakota | 2 mi | 40 yd | 0 | 0 |
| Aug 11, 1999 | F0 | Wyoming | 0.2 mi | 50 yd | 0 | 0 |
| Aug 11, 1999 | F0 | North Dakota | 0.5 mi | 20 yd | 0 | 0 |
Tornado history nearby
Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025.