Tonga was rocked by an earthquake which initial reports suggested could cause hazardous waves on its coastline.

A major, 7.0-magnitude earthquake struck in the South Pacific Ocean on Monday, according to the United States Geological Survey. The quake prompted a brief “Tsunami Threat” for Tonga. Preliminary reports from the U.

A 7.0 magnitude earthquake struck off the coast of Tonga early Monday. The island nation felt six aftershocks but did not immediately report damage.