Location: 82 km NNW of San Antonio, Puerto Rico Period: 16 Dec 2019 10:50:52 - 18 Dec 2019 03:56:05 (1 day 17 hours 5 minutes) Volcanoes in 100km radius: None Earthquakes: 27 1 swarms found nearby. 2019 S20190924.1(6.9km) 23 Sep 16 days 17 hours 363 earthquakes