Ian has become a post-tropical cyclone, but winds remain at 70 mph and the "dangerous storm surge, flash flooding and high wind threat continues," the National Hurricane Center said in its latest bulletin.

Hurricane warning and watch areas have now been discontinued, though a tropical storm warning has been issued from Edisto Beach, South Carolina, to Cape Fear, North Carolina.

Floridian Hanna-Kay Williams started to experience contractions late Tuesday evening, just as the Orlando area was experiencing signs of the hurricane to come.

So she braved the strong winds and potentially dangerous flooding to get to a hospital after she went into labor during Hurricane Ian.

"I was going in and out because the car was swaying in the wind and the rain was intense, but my fiancé is a great driver so I was in great hands," Williams, 22, of Melbourne, told ABC News.

Read more about the account here.

-ABC News' Mary Kekatos

Hurricane Ian made landfall in South Carolina Friday afternoon as a powerful Category 1 storm, bringing damaging winds and life-threatening storm surge.

Ian made landfall near Georgetown. The storm is expected to move further inland across eastern South Carolina and central North Carolina through the night and into Saturday.

After making landfall, it is expected to weaken and rapidly transition into a post-tropical cyclone overnight. It is forecast to bring heavy rain to North Carolina and Virginia and up through the Northeast on Saturday.

Rainfall rates have been up to 2 inches per hour with heavy rain bands in the Charleston area. Wind gusts up to 92 mph have been recorded.

President Joe Biden spoke from the White House Friday afternoon about Hurricane Ian's wrath, describing the devastation in Florida as well as warning residents of South Carolina to be prepared for another landfall.

"We're just beginning to see the scale of that destruction," Biden said of the damage in Florida. "It is likely to rank among the worst in the nation's history. You have all seen on television, homes and property wiped out. It is going to take months, years to rebuild."

He added, "I just want the people of Florida to know we see what you are going through and we are with you. And we are going to do everything we can for you."

Biden said the U.S. Coast Guard has mobilized 16 helicopters, 18 rescue boats and six fixed-wing planes to help in search and rescue in Florida. More than 100 people have been rescued by the Coast Guard, Biden said. Hundreds more have been rescued by volunteers.

"The federal government will cover every cost, 100% of the cost, to clear the massive debris left in the wake of the hurricane and these counties," the president said. "It all needs to be cleared out for communities to begin the hard work of trying to get back on their feet."

NASA hasn’t decided whether to leave its Artemis I rocket on the launchpad as it monitors Tropical Storm Ian's path toward Florida, the agency said Sunday.

The federal space agency’s mission managers will continue discussions on Monday about the next steps as its rocket was delayed again.

On Saturday, NASA scrapped its third planned launch attempt of Artemis I because of weather concerns. Artemis I was scheduled to launch on Sept. 27.

Engineers will decide if the rocket needs to roll back off the launch pad. If they do not roll it back, the next possible launch date is Sunday, Oct. 2.

Tropical Storm Ian is forecast to strengthen into a major hurricane as it nears Florida.

NASA had to scrub the first launch attempt on Aug. 29 because of a faulty temperature sensor and the second attempt on Sept. 3 due to a liquid hydrogen leak.

If the Oct. 2 launch doesn’t happen, the rocket will be taken back to the Vehicle Assembly Building at the Kennedy Space Center until the team decides on the next date.

-ABC News' Gina Sunseri, Mary Kekatos and Nadine El-Bawab