Second 6.0+ magnitude quake strikes Puerto Rico amid heavy seismic activity Tuesday morning
A 6.4-magnitude earthquake struck Puerto Rico before dawn on Tuesday, and was followed three hours later by an aftershock measuring 6.0. They are the largest in a series of quakes that have struck the U.S. territory in recent days and caused heavy damage in some areas.
Earthquake jolts Puerto Rico
A 5.7-magnitude quake jolted Puerto Ricans out of their beds Monday morning, the strongest quake yet to hit the U.S. territory that has been shaking for the past week.