The U.S. Geological Survey says a powerful magnitude 7.7 earthquake has struck south of Cuba and northwest of Jamaica.

It was centered 86 miles northwest of Montego Bay, Jamaica, and 87 miles west-southwest of Niquero, Cuba.

It hit at 2:10 p.m. (1910 GMT) and the epicenter was a relatively shallow six miles beneath the surface.

There are no immediate reports of damage or injuries.

The quake could be felt strongly in Santiago, the largest far-eastern Cuban city.

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