Hurricane Erin is rapidly intensifying as it tracks above the northeastern Caribbean Saturday, churning up rough surf and sending rain and gusty winds to islands south of its path.

Hurricane Erin became a Category 3 hurricane in the Caribbean and is expected to reach Category 4 later Saturday. The storm is expected to remain over open waters, although tropical storm watches were issued for Anguilla,

Hurricane Erin, now a Category 3 storm, is expected to strengthen and become a Category 4 hurricane, with maximum sustained winds of 150-mph.