SAN JUAN, Puerto Rico—Puerto Rico activated the National Guard and canceled the start of classes in public schools as forecasters warned that the U.S. territory would be hit by Tropical Storm Ernesto, which formed in the Atlantic Ocean on Monday.
Tropical storm warnings were in effect for Puerto Rico, Vieques, Culebra, the U.S. and British Virgin Islands, Antigua, Barbuda, Anguilla, St. Kitts, Nevis, Montserrat, Guadeloupe, St. Martin, St. Barts and St. Maarten.
