PEMBROKE PARK, Fla. - The first tropical storm of 2017 formed Thursday morning in the Atlantic Ocean.
A subtropical cyclone that formed Wednesday strengthened to become the first tropical storm of the year, but it does not pose a threat to the United States.
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Tropical Storm Arlene was moving west-northwest at 25 mph with maximum sustained winds at 45 mph.
The National Hurricane Center in Miami forecasts the storm to dissipate by Friday.
This is the third consecutive year that a storm has formed before the official start of hurricane season, which begins June 1. Tropical Storm Ana formed in May 2015 and Hurricane Alex formed in January 2016.
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