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.The storm formed just west of the Cabo Verde islands off the western coast of Africa,

Forecasters say Tropical Storm Erin is "moving quickly" as it strengthens and heads toward the western hemisphere, but U.S. weather officials say it's too early to tell what impact it will have.