Tropical Storm Dorian weakened somewhat Thursday night as its maximum sustained winds dropped to 50 mph over the open tropical Atlantic Ocean, the National Hurricane Center in Miami said.
As of 11 p.m. the storm was moving west-northwest at 20 miles per hour about 1,550 miles east of the northern Leeward Islands. Dorian's wind strength was 10 mph lower than in the previous advisory at 5 p.m.
Dorian had gained some strength Thursday morning.
Little further change in strength is forecast through late Saturday, according to the National Hurricane Center
A turn toward the west with an increase in speed is forecast for Friday. The long-range forecast shows the storm approaching Puerto Rico by next week.
Dorian is moving towards warmer waters that could strengthen it, but it will also encounter some wind shear that could tear it apart.
There are currently no watches or warnings in effect.
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