A small earthquake Tuesday morning was centered just southwest of Millstadt.
According to the US Geological survey, the quake was a 2.4-magnitude and its epicenter was 4 miles southwest of the village. It happened at 2:03 a.m.
The earthquake happened along the Ozark Dome Seismic Zone which borders the more well-known and more active New Madrid Seismic Zone. The Ozark Dome Zone covers parts of Illinois, Indiana, Kentucky, Missouri and Arkansas. According to USGS, small quakes happen in the zone about twice a year.
The largest quake in the zone was centered in southern Illinois in 1968. It measured 5.4 on the Richter Scale and damaged buildings in the region.