Powerful earthquake with a magnitude of 7.6 has hit the southern coast of Cuba in the Caribbean Sea. Hazardous tsunami waves may be possible within 1000 km of the epicentre. According to the US Geological Survey, the 7.6 magnitude temblor struck around 9:51 pm EST. The quake's epicentre was located about 27 miles northeast of the Great Swan Island, off the coast of Honduras. Tsunami alert has been issued for some coasts of Mexico, Cuba, Jamaica, Belize, Honduras and Cayman Islands. Watch this video to find out more.