KILL DEVIL HILLS, N.C. » Hurricane Arthur has made landfall near the southern end of North Carolina’s Outer Banks.

The U.S. National Hurricane Center in Miami said Arthur reached land about 5:15 p.m. Hawaii time Thursday between Cape Lookout and Beaufort, North Carolina.

Arthur strengthened to a Category 2 hurricane Thursday night, with winds of 100 mph as the storm neared North Carolina. Little change was expected in the storm’s strength Thursday night and Friday, and Arthur was expected to weaken as it travels northward and slings rain along the East Coast.

The storm was located about 65 miles southwest of Cape Hatteras, North Carolina. It was moving northeast at 18 mph.

The annual Boston Pops Fourth of July concert and fireworks show was rescheduled for Thursday because of potential heavy rain from Arthur, while fireworks displays in New Jersey, Maine and New Hampshire were postponed until later in the weekend.

"We don’t know for sure if the exact center of Arthur is going to pass over land or not. The chances have been increasing for that to occur with the last couple of forecasts. But even if the exact center doesn’t go over you, you will experience impacts tonight. The weather is going downhill in North Carolina, even as we speak," said Rick Knabb, the director of the U.S. National Hurricane Center in Miami.

The islands are susceptible to high winds, rough seas and road-clogging sands, prompting an exodus that began Wednesday night.

Among the tourists leaving Hatteras Island were 27-year-old Nichole Specht and 28-year-old Ryan Witman of Lancaster, Pennsylvania. The couple started driving at 3:30 a.m. Thursday on North Carolina Highway 12, the only road on and off Hatteras.

"We were just saying we were really, really lucky this year that the weather was so great, and then this," Specht said as she ended a two-week vacation.

Many island residents, meanwhile, decided to ride out the powerful storm rather than risk losing access to homes connected to the mainland by a highway prone to washouts.

"All the people that I know who live here are staying put," said Mike Rabe, who planned to stay in his Rodanthe home despite an evacuation order for surrounding Hatteras Island.

The departures of vacationers left things "pretty dead" on Hatteras Island during the normally bustling run-up to the Independence Day weekend, Rabe said. He spent Thursday running errands and helping neighbors prepare their homes for the storm.

Before the storm hit, tourism officials had expected 250,000 people to travel to the Outer Banks for the holiday weekend. Gov. Pat McCrory sought to strike a balance between a stern warning to vacationers and optimism that part of the busy weekend could be salvaged.

"Of course, this holiday weekend, the July 4th weekend, is one of the biggest weekends for coastal tourism in the state, and we anticipate a beautiful weekend after the Tropical Storm Arthur or the Hurricane Arthur is out of North Carolina," he said.

Arthur, the first named storm of the Atlantic season, prompted a hurricane warning for much of the North Carolina coast. On the Outer Banks’ Ocracoke Island, accessible only by ferry, a voluntary evacuation was underway. Officials said ferry service would end at 5 p.m.

Among those leaving the island was the Unmussig family of Midlothian, Virginia. They cut their vacation two days short when they left Thursday morning in an SUV towing a trailer filled with bicycles and kayaks.

"Our cottage was right on the sound and we didn’t want that back-current surge coming in and flooding us out," said Donald Unmussig, 50.

"I just didn’t want to risk getting caught there. I have to work Monday morning. I didn’t want to be late," he added. "We just decided to cut the losses and go home and not have to deal with the problems."

Tropical storm warnings were also in effect for coastal areas in South Carolina and Virginia and as far north as Cape Cod, Massachusetts.

On the Massachusetts island of Nantucket, no evacuations were planned, but residents who have lived through many a fierce storm said they know better than to totally relax.

"I think that for the most part it’s another storm, but you never know what can happen," said Rocky Fox, who owns the Chicken Box nightclub on Nantucket. "Being the Fourth of July weekend, things seems to be magnified."

Fox said Nantucket residents are used to being prepared. "Mother Nature was upset with us this winter, and she may not be through. We’re on an island. You can never tell what it’s going to do. You prepare for the worst and hope for the best."

Among the residents planning to ride out the storm was 79-year-old Tom Murphy, a retired Presbyterian minister who has lived on Hatteras Island since 1986.

"There are some concerns," he said, particularly about N.C. 12. "But they are not enough to outweigh the desire to be here when it’s all over. The awful part about leaving is the wondering what’s happening at your house down there when you can’t get back."

Associated Press writers Martha Waggoner in Raleigh, N.C.; Tony Winton in Miami; and Matt Small in Washington contributed to this report.