7.6 Magnitude Earthquake Rocks Caribbean, Tsunami Warnings Issued

A 7.6 magnitude earthquake struck in the middle of the Caribbean Sea on Saturday evening .

The quake struck midway between Georgetown in the Cayman Islands and Honduras .

Authorities warned that waves generated by the quake may pose a threat to boats and beachgoers.

The warnings did not reach the U.S. mainland, though advisories were issued for Puerto Rico and the Virgin Islands .