Erin is a large hurricane and is expected to grow "substantially in size" as it moves over the western Atlantic this week, according to the Hurricane Center. Hurricane-force winds extend outward up to 80 miles from the center, and tropical-storm-force winds extend outward up to 205 miles.

South Florida is not forecast to see direct impacts from Hurricane Erin, but rip currents and surf up to 6 feet, especially along Palm Beach, are likely.

Hurricane Erin won't make landfall in the U.S., but it will bring dangerous rip currents to the East Coast. Beachgoers from Florida to the Carolinas to the Mid-Atlantic to Long Island need to be on alert for rip currents from Erin this week. A rip current, which flows out toward the ocean, can quickly pull a swimmer away from the shore.