M4.3 - 87km N of Culebra, Puerto Rico, 10.0 km depth.
The island of Puerto Rico has a long history of damaging earthquakes and tsunamis. The island is bounded on all sides by major tectonic fault lines.
Major earthquakes have produced damaging ground motions in Puerto Rico in 1615, 1670, 1751, 1776, 1787 (M8.0 Puerto Rico Trench), 1867 (M7.3 Anegada Passage) and 1918 (M7.3 Mona Passage).
The most recent large event to cause widespread damage across the island occurred in the Mona Passage in 1918, with M7.3.
The interior of the island is mountainous; resulting in much of the population being concentrated in the at-risk low-lying coastal flood plains selectable to tsunamis. Widespread liquefaction will happen in the low lying areas. Best evacuation plan for a large earthquake is up, horizontally.
