Tornado record · Original Fujita scale
F1 tornado, Cass County, North Dakota, July 4, 1977
RatingF1
Deaths0
Injuries0
Length20.7 mi
Width10 yd
Path
Drawn as a straight line from the recorded start point (47.05, -97.03) to the end point (46.80, -96.78), which is all NOAA's record holds. The real track may have curved.
The record
- Date
- July 4, 1977, 6:55 AM (as recorded, Central Standard Time)
- Rating
- F1
- States
- North Dakota
- Counties
- Cass County
- Path
- 20.7 miles long, up to 10 yards wide
- Casualties
- 0 deaths, 0 injuries
Other tornadoes on July 4, 1977
| Date | Rating | State | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| Jul 4, 1977 | F2 | Michigan | 2.5 mi | 90 yd | 0 | 1 |
| Jul 4, 1977 | F1 | Minnesota | 0.5 mi | 50 yd | 0 | 0 |
| Jul 4, 1977 | F1 | Michigan | 11.2 mi | 67 yd | 0 | 0 |
| Jul 4, 1977 | F1 | Michigan | 6.9 mi | 67 yd | 0 | 1 |
| Jul 4, 1977 | F1 | Michigan | 5.7 mi | 67 yd | 0 | 0 |
| Jul 4, 1977 | F0 | North Dakota | 0.1 mi | 10 yd | 0 | 0 |
Tornado history nearby
Source: NOAA Storm Prediction Center severe weather database, 1950 to 2025.