Magnitude 6.6 (mww), 35 km deep, north of Ascension Island — 1.11°S, 13.66°W. August 18, 2017 at 02:59 UTC. Tsunami: USGS flags this quake as having caused one, or the potential for one. Felt reports to USGS: 1. https://earthquake.usgs.gov/earthquakes/eventpage/us2000a98r Data: US Geological Survey (public domain).