The National Weather Service has analyzed overnight damage in two areas and determined winds there were an EF-0 tornado.
The winds speed with this classification is 65 to 85 miles per hour.
Damage was first surveyed and classified as EF-0 near the Auglaize County Neil Armstrong Airport in New Knoxville. The airport is located on Ohio 219.
The other tornado was confirmed three miles northwest of Rockford in Mercer County.
“That likely was no stronger than some of the straight line winds we had across the north, based on damage I have seen,” said Storm Center 7 Meteorologist Jamie Simpson. “The tornado classification likely came from an assessment of the damage pattern.
“In other words, the NWS surveyor likely saw some debris that was not just blown in a straight line, suggesting some rotation in the wind field,” he said.
Winds were strongest just after midnight Thursday morning, when the entire Southwest Ohio region was also impacted by heavy rain.
There was a lull in storm activity until the morning commute hours, when areas including Montgomery County were again hit with heavy rain and spots of localized flooding