During the severe weather in the Natural State Sunday night, a 4.7 magnitude earthquake hit near Greenbrier in central Arkansas at 11 p.m. There were three other aftershock quakes that measured 3.8 18 minutes after the initial shock, a 3.6 magnitude quake at 2:46 a.m. and a 3.2 at 7:06 a.m. Monday. Students at the…