A 6.0-magnitude earthquake shook Puerto Rico Monday night, striking off the coast of the island in the Atlantic Ocean.

The quake hit about 49 miles north-northwest of Isabela, Puerto Rico, around 11:23 p.m. ET, according to the United States Geological Survey.

This comes as Tropical Storm Karen bears down on the island, with sustained winds of over 40mph.

At least three aftershocks have followed the quake including a magnitude 4.7, USGS said.

Puerto Rico Gov. Wanda Vázquez Garced said in a tweet that there was no damage.

There is no threat of tsunami from the quake, according to a tweet from The National Weather Service Pacific Tsunami Warning Center.

USGS Earthquake map

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