Tropical Storm Bill formed in the far eastern Atlantic on Saturday and the government of the Netherland Antilles issued a tropical storm watch for St. Maarten, Saba and St. Eustatius because of Tropical Storm Ana.
The National Hurricane Center said Saturday evening that Ana had maximum sustained winds near 40 mph and was moving west near 17 mph. It was about 805 miles east-southeast of the Leeward Islands.
The Hurricane Center said residents there and in the Virgin Islands and Puerto Rico should monitor Ana's progress.
Tropical Storm Bill also had maximum sustained winds near 40 mph and was moving west near 16 mph. It was expected to get stronger within 24 hours and was about 820 miles west-southwest of the Cape Verde Islands.
Meanwhile, Hurricane Guillermo was still swirling in the open Pacific but had weakened to a Category 2 storm with winds near 110 mph. Guillermo was expected to weaken further as it headed over cooler waters. It was moving west-northwest near 14 mph and was about 1,605 miles west of the southern tip of Mexico's Baja California peninsula.