(3-15-24) The National Weather System out of Wilmington released a report on the Thursday tornado activity.

The tornado that started in southern Auglaize County and devastated the Indian Lake area was a EF-3. The Mercer and Auglaize County tornadoes were both EF-1 rated, while Darke County was an EF-2 system.

Ratings

A tornado is assigned a rating from 0 to 5 on the Enhanced Fujita Scale to estimate its intensity in terms of damage and destruction caused along the twister’s path.

This classification method is named after Dr. Tetsuya “Ted” Fujita, a University of Chicago meteorologist and severe storms research scientist who developed the original Fujita Scale in 1971. The scale became the internationally accepted method for measuring the severity of tornadoes.

  • F-0 (light damage): Less than 73 mph
  • F-1 (moderate damage): 73-112 mph
  • F-2 (considerable damage): 113-157 mph
  • F-3 (severe damage): 158-206 mph
  • F-4 (devastating damage): 207-260 mph
  • F-5 (incredible damage): 261-318 mph