UPDATE: Maria a maximum-strength hurricane

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Boats remain anchored in a wharf as Hurricane Maria approaches in Guadeloupe island, France, September 18, 2017.

MIAMI – Hurricane Maria has grown into a maximum-strength Category Five storm, US forecasters said Monday, as it was bearing down on the Caribbean island of Dominica.

READ: Hurricane Maria strengthens into dangerous category 4

The "potentially catastrophic" hurricane had top winds of 160 miles (257 kilometers) per hour as it swirled just 15 miles east-southeast of Dominica at 0000 GMT Tuesday, the Miami-based National Hurricane Center said.