Event narrative (NOAA)
A supercell thunderstorm developed very quickly in Eastern Carter County around 2:15 pm. The thunderstorm produced the first ever EF-3 rated tornado in southern Montana. The tornado first touched down at 2:27 pm around 13 miles southwest of Camp Crook, South Dakota, or about 10 miles southwest of Capitol, Montana. The tornado formed in the Sheep Mountains and eventually crossed Tie Creek Road as it moved slowly north. People lost site of the tornado as it entered Custer National Forest around 3:30 pm. ||The tornado was on the ground for an hour and traveled 10 miles and was reported to be a half mile wide at times. The tornado completely destroyed a trailer home, twisting and throwing debris over a mile. A small and old A-frame school house was completely destroyed, with debris blown 100 y
Other notable tornado events in Montana
Source: NOAA/NCEI Storm Events Database. Deaths and injuries are those NOAA classifies as direct. Damage is the reporting office's estimate at the time and is not inflation-adjusted. This is a catalogue record, not a forecast.