Erin became the first hurricane of the 2025 Atlantic season as it heads toward the Northern Leeward Islands and later Puerto Rico and the Virgin Islands.

Erin, the first hurricane of the season, is now forecast to become a Category 4 by Sunday. Here's where it could head in the week ahead.

A tropical storm watch remains in effect for St. Martin, St. Barthélemy and Sint Maarten, but the storm should largely spare the Lesser Antilles. Puerto Rico could see rain showers and blustery winds,