Tropical Storm Erin formed in the eastern Atlantic Ocean on Monday, forecasters said. The storm could strengthen to become the Atlantic's first hurricane of the season.

Erin became the first hurricane of the 2025 season on Friday and is expected to pass north of the Caribbean Islands on Saturday, according to the National Hurricane Center. Threat level: Erin could become a Category 4 hurricane over the weekend if it continues to rapidly strengthen as expected, according to the Saffir-Simpson Hurricane Wind Scale.