From the Overview: "On December 28, 2019, Puerto Rico experienced the first earthquake in what would be a series of tremors, including 12 earthquakes of greater than 5.0 magnitude on the Richter Scale. This includes a 6.4-magnitude earthquake in early January that led to a confirmed fatality and island-wide power cuts. This activity is ongoing and additional aftershocks and earthquakes may continue hitting the island even after the publication of this report."
U.S. House Committee on Natural Resources
Federal Depository Library Program Electronic Collection Archive: https://permanent.fdlp.gov/