4.1 magnitude earthquake hits Puerto Rico

FILE PHOTO: A 4.1 magnitude earthquake hit Puerto Rico Saturday night prompting a tsunami watch. (Eric Rojas/Getty Images)

Credit: Eric Rojas/Getty Images

Credit: Eric Rojas/Getty Images

FILE PHOTO: A 4.1 magnitude earthquake hit Puerto Rico Saturday night prompting a tsunami watch. (Eric Rojas/Getty Images)

4.1 magnitude earthquake hit Puerto Rico on Saturday night, prompting a tsunami watch.

The island has been rocked by a series of earthquakes in the past few weeks, including a 4.7 magnitude earthquake Dec. 28; a 6.4 quake Jan. 7; and 18 aftershocks between Jan. 14 and Jan. 15, according to the U.S. Geological Survey.

A tsunami watch for the U.S. Virgin Islands was also issued.

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