Coastal flood alerts were in effect in Virginia, Maryland, New Jersey, North Carolina and Delaware, with some advisories extending through Thursday. Ocean levels could rise 1 to 3 feet above normal during high tides, with up to 4 feet of seawater overwash possible in some places. Minor to moderate coastal flooding was likely, including in Atlantic City and Virginia Beach.

The storm’s main threats were expected to be wind and waves, with most of the rain forecast to remain offshore. Waves of 6 to 12 feet were possible along parts of the Outer Banks and the Delmarva Peninsula, from Virginia to Delaware, into early Thursday. Officials also warned of life-threatening rip currents along the coast.

On Hatteras Island, mandatory evacuation orders remained in place Tuesday as deteriorating conditions prompted the closure of Highway 12. Dare County emergency officials said the road shut around 6 p.m. Monday after ocean water breached protective dunes and flooded the roadway near the Pea Island Wildlife Refuge visitor center.

The pavement had not been damaged at the site, officials said. Crews were working to restore protective sand along the road shoulder and rebuild about 1,000 feet of dunes lost overnight. Wind advisories also covered parts of North Carolina, including the Northern Outer Banks, Hatteras Island and Ocracoke Island.

The prolonged storm puts coastal roads, dunes and communities at risk during high tides, while hazardous surf and rip currents pose a danger to beachgoers. Residents and visitors in affected areas should follow local emergency instructions and avoid entering rough surf.