A magnitude 4.0 earthquake struck early Tuesday in the southeast corner Missouri, waking up residents in as many as 12 other surrounding states. The US Geological Survey (USGS) said the quake hit at 3:58am local time (4:58am ET). Its epicenter was located a shallow 3.1 miles (5km) underground, about 150 miles (240km) south of St. Louis, near the New Madrid fault line. Hundreds reported feeling the quake in Missouri, according to the USGS, with the most significant shaking occurring in Sikeston, a small city about nine miles away from the epicenter.