Erin has now become the first hurricane of the 2025 Atlantic season, officially forming mid-Friday morning. Tropical Storm watches remain in effect for parts of the northern Leeward Islands, according to forecasters at the National Hurricane Center.

Tropical Storm Erin has formed on a path toward the Caribbean and is expected to strengthen to a hurricane later in the week as it passes by Puerto Rico. Most models forecast the storm turning upward into the Atlantic Ocean, but a few see the storm continuing onward to the U.S. mainland.