The National Weather Service in Wilmington OH has confirmed a tornado near Sunman in Ripley and Dearborn counties in Indiana on October 7 2017.
The first evidence of damage and therefor the determined start of the touchdown track was on the westernmost end of Industrial Drive near Sunman. Trees of 4 to 5 inches in diameter were snapped about halfway up the trunks.
At one property on Industrial Drive, barn doors were damaged by the tornado. At another property on the same road, a trailer was pushed off its foundation. Tree damage was also observed along Industrial Drive, extending to properties on Brick Yard Drive.
On Meridian Street about a half mile south of Sunman, a tractor-trailer was damaged by the tornado. Several trees were observed to be damaged in a wooded area east of Meridian Street and north of Edgewood Lane.
The tornado is believed to have crossed the Ripley/Dearborn county line in the vicinity of N Dearborn Road.
The most significant structural damage was observed at a property on Kruse Lane in Dearborn County. A barn had its roof partially removed and several walls were damaged. According to the resident at this location, metal roofing from the barn was found about three-quarters of a mile away, and insulation was carried as much as four miles downwind. There was also tree damage found at this location.
The last visible sign of damage and presumed end point of the tornado path was about a quarter mile north of the intersection of Fackler and North Dearborn Roads. There were 4 to 6 inch diameter tree limbs down in this location.
For reference: the Enhanced Fujita Scale classifies tornadoes
into the following categories:
EF0…wind speeds 65 to 85 mph.
EF1…wind speeds 86 to 110 mph.
EF2…wind speeds 111 to 135 mph.
EF3…wind speeds 136 to 165 mph.
EF4…wind speeds 166 to 200 mph.
EF5…wind speeds greater than 200 mph.