Powerful Hurricane Erin is expected to bring high seas, big rip currents, and rough surf as it moves between the United States and Bermuda.

Lifeguards and fire rescue crews in Hollywood Beach are on alert as red warning flags and safety signs go up, urging visitors to avoid the water altogether.

Forecasts nudge Erin's likely path to the west, increasing the risks at U.S. beaches. Tropical storm conditions are expected in North Carolina's Outer Banks starting late Wednesday.

Hurricane watchers are eying systems in the Atlantic basin. One has a medium chance of developing later this week.