MEMPHIS, Tenn. — The Mid-South was hit by seven earthquakes in just one day. The strongest earthquake – a magnitude three – was felt on Monday across parts of Tennessee, Arkansas, Missouri and Kentucky. At the University of Memphis Center for Earthquake Research and Information, Dr. Kent Moran is busy keeping a close eye on recent quake activity on Seismic Maps. “This is normal seismicity,” Dr. Moran said. “It just comes in bursts on occasion.” He’s not just looking for the Big One, but other quakes around the world and those shaking parts of the Mid-South. “We (are) here at...