M4.3 - 87km N of Culebra, Puerto Rico, 10.0 km depth. <br />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. <br /> <br />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). <br />The most recent large event to cause widespread damage across the island occurred in the Mona Passage in 1918, with M7.3. <br />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.
