Puerto Rico rocked by 6.0 earthquake The quake struck 46 miles off Puerto Rico's northwest coast and was followed by at least seven aftershocks, but there were no immediate reports of damage or injuries. Island on alert for tropical depression »

Puerto Rico rocked by 6.0 earthquake The quake struck 46 miles off Puerto Rico's northwest coast and was followed by at least seven aftershocks, but there were no immediate reports of damage or injuries. Island on alert for tropical depression »