A major, 7.6-magnitude earthquake struck in the Caribbean Sea on Saturday and triggered a tsunami advisory in Puerto Rico and ...

Additional information collected about the earthquake may also prompt U.S.G.S. scientists to update the shake-severity map. An aftershock is usually a smaller earthquake that follows a larger one ...

Residents were advised to avoid coastlines for at least 24 hours or until tsunami and earthquake monitoring systems were fully operational again. Video footage from the Vanuatu Broadcasting and ...