An earthquake registering 2.1 on the Richter scale struck northwest Georgia on Monday morning.

According to the U.S. Geological Survey, the quake’s epicenter was about 2 miles from Tunnel Hill and almost 5 miles from Dalton.

The eastern Tennessee seismic zone extends across Tennessee and northwest Georgia into northeast Alabama, the USGS said. It is one of the most active earthquake areas in the Southeast.

The region’s largest-known quake, registering 4.6, occurred on April 29, 2003, near Fort Payne, Alabama.