Tornado record · Original Fujita scale
F1 tornado, Harmon County, Oklahoma, April 18, 1957
RatingF1
Deaths0
Injuries0
Length1.5 mi
Width200 yd
Path
Drawn as a straight line from the recorded start point (34.68, -99.92) to the end point (34.68, -99.92), which is all NOAA's record holds. The real track may have curved.
The record
- Date
- April 18, 1957, 9:30 PM (as recorded, Central Standard Time)
- Rating
- F1
- States
- Oklahoma
- Counties
- Harmon County
- Near the path
- Hollis (approximate: towns the straight recorded line passes through)
- Path
- 1.5 miles long, up to 200 yards wide
- Casualties
- 0 deaths, 0 injuries
Other tornadoes on April 18, 1957
| Date | Rating | State | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| Apr 18, 1957 | F3 | Texas | 1 mi | 17 yd | 0 | 0 |
| Apr 18, 1957 | F2 | South Dakota | 3.8 mi | 10 yd | 0 | 0 |
| Apr 18, 1957 | F1 | South Dakota | 0.1 mi | 10 yd | 0 | 0 |
| Apr 18, 1957 | F1 | Nebraska | 0.1 mi | 50 yd | 0 | 0 |
| Apr 18, 1957 | F0 | Illinois | 0.1 mi | 10 yd | 0 | 0 |
| Apr 18, 1957 | F0 | Kansas | 0.1 mi | 10 yd | 0 | 0 |
| Apr 18, 1957 | F0 | Kansas | 1.5 mi | 10 yd | 0 | 0 |
| Apr 18, 1957 | F0 | Oklahoma | 0.1 mi | 10 yd | 0 | 0 |
Tornado history nearby
Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025.