Puerto Rico and the U.S. Virgin Islands braced for heavy rains and strong winds Friday as a cluster of storms swirled across the northern Caribbean.

The National Weather Service in San Juan said the region could be hit with up to 6 inches of rain and wind gusts of 35 mph.

Crews were clearing several downed trees and power lines in Puerto Rico as well as small landslides in the northern part of the island, the Emergency Management Agency said in a statement. One tree fell on top of a car and broke a woman's leg while she was driving in the north coastal town of Manati.

Nearly 3,500 customers were without power, and more than 3,550 without water.

A flash flood warning was in effect for Puerto Rico until Saturday morning. Floods forced the closure of a couple of roads in northeastern Puerto Rico.

The National Hurricane Center said the cluster of storms had a 80 percent chance of becoming a tropical depression or tropical storm over the weekend or by early next week as it heads toward the southeastern and central Bahamas.

The Weather Channel in a video made this morning shows several tracking models, most of which predict the disturbance will not threaten the mainland.