What is causing all that rattling in the Caribbean?

Earthquakes seem to be a regular event in the Caribbean these days, but scientists say the 7.7 magnitude quake that struck just South of Cuba Tuesday is not necessarily related to the tremors that have been shaking Puerto Rico since December 28.

Tuesday's earthquake occurred along the Septentrional-Orient fault zone,  a place where two tectonic plates move against each other.

While a 5.9 quake rattled the fault line near Haiti last year, Tuesday's quake is the only one recorded in the area in the past 365 day, according to Earthquaketrack.com.

The data for Puerto Rico is shockingly higher.

Earthquaketrack.com shows there have been 11 earthquakes in the Southern region of the U.S. Territory in the past 24 hours, 298 in the past 7 days and 2,385 in the past 30 days.

Puerto Rico is in an area that is being squeezed by two major plates in an area ominously known as the Muerto Trough, yes, that translates to the Trough of the Dead.

Scientists say the Caribbean Plate is literally slipping beneath the North American Plate under the island.

Since the large quake on January 7, more than 4,600 people in Puerto Rico are living outside  waiting for the rumbles to subside.