The unit said the location of the quake was Latitude: 15.11north, Longitude: 60.43 west at a depth of 10 kilometers.
The storm is tracking to the west northwest at 14 miles per hour with tropical storm force winds extending outward up to 140 miles primarily to the east of the center.
In the tropics, the Tropical Storm Kirk continues moving west through the Caribbean, struggling to maintain tropical storm status.
Tropical storm warnings and watches continues for portions of the Lesser Antilles.
On the forecast track, Kirk's centre, or its remnants, will move across the eastern and central Caribbean Sea over the next two to three days.
Rosa had maximum sustained winds of 125 mph (205 kph) and was located about 570 miles (915 kilometers) southwest of the southern tip of the Baja California Peninsula.
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Officials in the French Caribbean island of Guadeloupe closed schools on Thursday and Friday as a preventive measure.
St Lucia was returning to normal on Friday after Tropical Storm Kirk drenched the island with heavy rains and winds, causing electricity blackouts in some areas as a result of trees falling on power lines. Kirk is forecast to become a tropical depression Friday night and turn into a trough of low pressure by Sunday.
Tropical Storm Warnings remain in effect for St. Lucia and St. Vincent and the Grenadines.
The NHC has advised that these watches and warnings will likely be gradually discontinued later today. Meteorologists warned of flash floods and mudslides.
The US National Hurricane Center also warned of heavy rains for St Croix and eastern Puerto Rico.