A 6.6-magnitude earthquake hit off the coast of Indonesia’s Sumatra island on Thursday, according to the U.S. Geological Survey (USGS).
The Indonesian Tsunami Early Warning System confirmed that the quake did not pose a tsunami threat.
Indonesia lies along the Pacific Ring of Fire, an area prone to frequent and sometimes destructive seismic and volcanic activity.
The quake occurred 16 miles deep and about 28 miles northwest of Sinabang, a town on the island of Simeulue off Sumatra’s western shore. A smaller 4.8-magnitude aftershock followed shortly afterward to the south.
Authorities reported no immediate injuries or damage, and the USGS issued a green alert, indicating low risk of casualties and economic impact.
