"A 6.4 magnitude earthquake rumbled across Puerto Rico on Tuesday, killing at least one person and knocking out power to virtually the entire island of more than 3 million.

An aftershock three hours later registered at magnitude 6.0. The temblors came one day after the island was shaken by a 5.8 magnitude quake that crumbled homes and triggered states of emergency across the island.

Tuesday's quake was the largest in a series that have struck the U.S. territory in recent days and caused heavy damage in some areas, forcing more than 300 Puerto Ricans to leave their homes and seek refuge. "

John Bacon and Adrianna Rodriguez report for USA TODAY January 7, 2020. [2]

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"Puerto Ricans Sleep Outside, Wait For Power After 'Devastating' Quake" (Reuters) [3]