The quake prompted a brief “Tsunami Threat” for Tonga. Preliminary reports from ... U.S.G.S. scientists to update the shake-severity map. An aftershock is usually a smaller earthquake that ...

A major earthquake has rattled Tonga, an archipelago nation in the South Pacific Ocean ... Tongatapu, where the capital city Nuku'alofa is located, and about 50 miles southeast of a different island ...