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Earthquakes Rattle Puerto Rico

by Weatherboy Team Meteorologist - May 1, 2022

105 earthquakes rocked Puerto Rico in the last 7 days, including 5 that struck just today. Each dot reflects the epicenter of the earthquakes; the orange dots reflect recent quakes and the red dot reflects the most recent. Image: USGS
105 earthquakes rocked Puerto Rico in the last 7 days, including 5 that struck just today. Each dot reflects the epicenter of the earthquakes; the orange dots reflect recent quakes and the red dot reflects the most recent. Image: USGS



Over a hundred earthquakes have rocked Puerto Rico over the last 7 days; five earthquakes rattled the island within the last 24 hours. While several of these earthquakes have been felt by locals, there has been no earthquake damage nor injuries; due to their relatively weak intensity, there is also no tsunami threat to the Caribbean or the U.S. East Coast at this time.

These earthquakes aren’t far from the epicenter of a  strong earthquake that hit  in January 2020. That 6.4 created extensive damage in Puerto Rico, including widespread power failures across much of the island.  An earthquake swarm started here in December 2019 and unrest has continued since.

These earthquakes are occurring near  the northern edge of the Caribbean Plate, a mostly oceanic tectonic plate underlying Central America and the Caribbean Sea off of the north coast of South America.  The Caribbean Plate borders the North American Plate, the South American Plate, the Nazca Plate, and the Cocos Plate. The borders of these plates are home to ongoing seismic activity, including frequent earthquakes, occasional tsunamis, and sometimes even volcanic eruptions.




Fortunately, the earthquakes for now have been tame enough not to create a tsunami. The strongest, a 3.8  which struck last night, wasn’t strong enough to generate any tsunami threat for Puerto Rico, the Bahamas, the Caribbean, or the U.S. East Coast.

USGS continues to monitor earthquake activity in and around Puerto Rico while the National Weather Service Tsunami Warning Center is keeping an eye on any tsunami threats.

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