MIAMI -- A new tropical depression has formed in the Atlantic prompting tropical storm warnings to be issued across a swath of islands in the Caribbean.

Tropical depression nine has maximum sustained winds near 35 mph (55 kph) early Tuesday but is expected to strengthen and become a tropical storm later in the day.

Tropical storm warnings have been issued for Dominica, Guadeloupe, Desirade, Les Saintes, Marie Galante, St. Martin, St. Kitts, Nevis, Antigua, Montserrat and Barbuda.

Tropical storm watches have been issued for Puerto Rico, the U.S. Virgin Islands, Vieques, Culbera, Saba, St. Eustatius, St. Maarten and the British Virgin Islands.

It s too early to say if the storm will have an impact on the U.S. mainland, but Floridians are advised to pay close attention to its forecast path.

The depression is centered about 715 miles (1,150 kilometers) east of the Leeward Islands and is moving west near 20 mph (32 kph).

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