Magnitude 7.2 (mww), 78 km deep, South Sandwich Islands region — 56.24°S, 26.94°W. May 28, 2016 at 09:46 UTC. Tsunami: USGS flags this quake as having caused one, or the potential for one. https://earthquake.usgs.gov/earthquakes/eventpage/us20005ysu Data: US Geological Survey (public domain).