Danny may be done, but Erika has arrived.
The tropical storm formed Monday evening over the central tropical Atlantic Ocean, according to the National Hurricane Center.
At 8 a.m. Tuesday, Erika was 750 miles east of the Leeward Islands and moving west at 20 mph. The storm had sustained winds of 45 mph.
A tropical storm watch has been issued for St. Maarten, Montserrat, Antigua, Barbuda, St. Kitts, Nevis, Anguilla, Saba and St. Eustatius. A watch means tropical storm force winds are possible within 48 hours.
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The center of Erika is expected to approach the Leeward Islands Wednesday night or early Thursday.