A strong earthquake out to sea that shook Puerto Rico early Monday is one of the largest to hit the U.S. territory in recent years, cracking floors and causing some power outages, but no major damages or injuries, officials said.
The 6.4-magnitude quake struck just after midnight about 35 miles (57 kilometers) north of Hatillo, at a depth of 17 miles (28 kilometers), according to the U.S. Geological Survey.
source,
source,
source,
source.
