Residents in San Juan reported minor damage and feeling buildings sway following the midnight quake A strong earthquake struck north of Puerto Rico early this morning, causing minor damage. Residents reported items falling in their home and dozens said they felt buildings sway in the capital of San Juan, about 61 miles from the quake's epicenter. No injuries have been reported. The U.S. Geological Survey said the quake had a preliminary magnitude of 6.4 and struck at 12.01am about 35 miles north of Hatillo, and at a depth of 17.7 miles below the seabed. Amazing pictures show hulking wreck of the Costa Concordia rusting away in the Mediterranean Sea as massive operation to lift stricken cruise liner begins Amtrak train runs over TWO PEDESTRIANS in space of four hours 48 miles apart 'There is the small possibility of a local tsunami that could affect coasts located usually no more than a hundred kilometers from the earthquake epicenter,' it said in its advisory. But the U.S. National Weather Service Caribbean Tsunami Warning Program later determined that there would be no tsunami.