Magnitude 6.8 (mww), 10 km deep, 97 km NE of Hihifo, Tonga — 15.32°S, 173.17°W. November 4, 2017 at 09:00 UTC. Tsunami: USGS flags this quake as having caused one, or the potential for one. Felt reports to USGS: 35. https://earthquake.usgs.gov/earthquakes/eventpage/us2000bibm Data: US Geological Survey (public domain).