Hurricane Erin's outer bands were beginning to lash the southeast Bahamas and the Turks and Caicos Islands early Monday after regaining Category 4 strength overnight.

Tropical Storm Erin is forecast to strengthen into a hurricane on Friday, Aug. 15, according to the National Hurricane Center.

Erin has become the first hurricane of the 2025 Atlantic season as it heads west toward the Leeward Islands and the Caribbean. It's expected to strengthen.