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9 Quakes Rattle Puerto Rico; No Tsunami Threat

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Nine earthquakes have rocked Puerto Rico in the last 24 hours. Image: USGS
Nine earthquakes have rocked Puerto Rico in the last 24 hours; the red dot reflects the most recent earthquake epicenter. Image: USGS

Nine earthquakes have rattled Puerto Rico in the last 24 hours, all with a magnitude of 2.5 or greater. Fortunately, the strongest quake was 3.4; while it could be felt, it was far too weak to create a local or regional tsunami.




Puerto Rico is on the northern edge of the Caribbean Plate which is running into the North American Plate. The island is actually inching its way closer to the U.S. Mainland, although it’ll take thousands upon thousands of years to make a noticeable shift in its location.

The second CaribeWave simulation earthquake will trigger a tsunami that'll radiate out from the Northern Greater Antilles. During a real tsunami, such a map would only be made available to officially designated Tsunami Warning Focal Points and National Tsunami Warning Centers. Image: NOAA
As part of the  CaribeWave’21  drill, a simulated  earthquake will trigger a tsunami that’ll radiate out from the Northern Greater Antilles. During a real tsunami, such a map would only be made available to officially designated Tsunami Warning Focal Points and National Tsunami Warning Centers. Image: NOAA

Puerto Rico is participating in earthquake and tsunami drills in the coming days. Both CaribeWave’21 and LANTEX21 will simulate nearby major earthquakes and earthquake-triggered tsunamis.