Still no explanation for boom felt in Kosciusko County

There’s still no definite explanation for the boom heard and felt by many residents in Kosciusko County on Sunday night.

RELATED: Boom heard and felt throughout Kosciusko County

Kosciusko County Dispatch said their phones began ringing shortly after 6:30 p.m. They sent officers out to investigate, but the boom was reported in a wide range of locations throughout the county.

Since then, experts have ruled out several theories.

WNDU Meteorologist David Harker says it was likely not a “frost quake” as those seismic events need a large temperature drop in a short period of time, and the ground must be saturated at a point before the large temperature drop. Harker says his research indicates we did not have huge temperature drop in a short period of time before this occurred.

The U.S. Geological Survey did not have seismic activity reported, which rules out an earthquake as the source of the boom.

Other specialists say the source couldn’t have been a meteorite, either.

The final theory receiving wide speculation is that it was a sonic boom from one of the nearby air bases. Network Indiana reports officers at the Grissom Air Reserve Base near Peru say it did not come from any Air Force planes stationed there, in Fort Wayne, anywhere else that they know of.