Magnitude 7.1 (mww), 135 km deep, 31 km NE of Port-Olry, Vanuatu — 14.86°S, 167.30°E. October 20, 2015 at 21:52 UTC. Tsunami: USGS flags this quake as having caused one, or the potential for one. Felt reports to USGS: 8. https://earthquake.usgs.gov/earthquakes/eventpage/us10003q0q Data: US Geological Survey (public domain).