According to the US Geological Survey at the University of Memphis, the 2.1 magnitude quake took place at 3:48 am. It was centered about 5.6 miles north-northeast of Tiptonville, and 21.6 miles west of Union City, near the Mississippi River, just south of the Kentucky state line.
The USGS says a quake of 2.5 is the threshold of humans being able to detect the ground shaking.
No damage has been reported from this earthquake.
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