Hurricane Erin is causing dangerous rip currents and high surf at beaches along the East Coast, and some areas could see coastal flooding over the coming days. The flood risk increases Thursday, when high waves coincide with high tide along the Jersey Shore and New York's south-facing beaches.

High surf and dangerous rip currents are likely. People are advised to stay out of the water this week, even when a lifeguard is on duty.

Hurricane Erin brings swells to Florida. It's ideal for surfing but dangerous for beachgoers who see blue skies, but don't realize the dangers.