The U.S. Geological Survey confirms that at 2.6 magnitude earthquake centered 6 miles north northwest of Shelbyville is the reason for the boom and the shaking.
While the small earthquake occurred about 90 miles away from Northern Kentucky, Fort Thomas resident, Julie Pergrem, said she's sure she felt it last night.
"It shook me awake and knocked a few books off of an already unsteady bookshelf," said Pergrem. "My husband actually got up to see if someone had broken in. And honestly, it didn't even enter my head that it was an earthquake until we heard on the radio this morning that Shelbyville had had a quake at the same time we had been shaken awake."
Western Kentucky sits on the New Madrid Seismic Zone, which make minor earthquakes not an uncommon occurrence.
According to EarthquakeTrack.com, there have been 86 earthquakes today with a magnitude of 1.5 or greater and 637 in the past week.
Most of the earthquakes that occur in the United States happen in California, Alaska and Hawaii.