Earthquake of 6.6 Magnitude Hits off Indonesia’s Sumatra

A 6.6-magnitude earthquake hit off the coast of Indonesia’s Sumatra island on Thursday, as reported by the U.S. Geological Survey (USGS). The Indonesian Tsunami Early Warning System confirmed that the quake did not pose a tsunami threat. Indonesia, located along the Pacific Ring of Fire, experiences frequent seismic and volcanic activity. The earthquake struck 16 miles deep and about 28 miles northwest of Sinabang, a town on the island of Simeulue. A 4.8-magnitude aftershock was felt shortly afterward to the south.