At 8:37:55PM Central Time on Tuesday night (1/15/2019) the U.S. Geological Survey recorded a 2.8 magnitude quake at a depth of 7.4 Km. That is a very light tremor, but it occurred near Shelbyville and residents in Murfreesboro reported feeling it.
The earthquake was only 3.2 miles southeast of Wartrace, Tennessee.
The agency classifies a quake of this magnitude as weak. In fact, it is not until the 2.5-2.8 range that makes it strong enough to be felt.
Previous Month
In December, 2018 two earthquakes shook parts of East Tennessee within a 4-day period.
On Wednesday morning, December 12, 2018 at 3:14AM (Eastern Time) a 4.4 magnitude quake was recorded 9-miles from Spring City, TN. Then thirteen minutes later, in the same area, a 3.0 quake was measured at 3:27AM Eastern Time. Those were both early Wednesday morning.
The USGS records show that 4-days earlier (12/8/2018), a seismic reading of 2.7 was recorded 8-miles from Sweetwater, Tennessee. By the way, Spring City and Sweetwater are about 30-miles apart.
By the way, Spring City is approximately 91-miles from Shelbyville, and Sweetwater is almost 115 miles from Shelbyville.