TAMPA, Fla. - Tropical Storm Jerry continues to spin across the Atlantic and is on track to strengthen into a hurricane .

What we know:

As of 5 a.m. on Thursday, it was located at 15.7°N 57.7°W, which is less than 400 miles to the east-southeast of the northern Leeward Islands.

It was moving west-northwest at 20 miles per hour and had maximum sustained winds of 65 miles per hour.

Dig deeper:

Tropical storm watches are in effect for several islands, including Antigua, Barbuda and Anguilla, as well as St. Kitts, Nevis, Montserrat, St. Barthelemy, St. Martin, Sint Maarten, Saba and St. Eustatius, Guadeloupe and the adjacent islands.

The NHC said that tropical storm conditions are possible in portions of the northern Leeward Islands within the watch area starting late Thursday and in

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