But its slow march over the two states, crawling west at only 2 miles per hour (3 km per hour), threatens to leave large parts of the region deluged in the coming days.
More rain was expected Saturday night, and Gov. Roy Cooper said in a statement that flood danger from the storm was "more immediate than when it made landfall just over 24 hours ago". However, as US Presidents Trump says, "fake news". In South Carolina, some 36,000 customers are without power, officials said.
Weinmann pulled 10 people out of flooded neighborhoods and delivered them to a shelter. Both states also are at a risk of risky flash floods and river flooding.
Utility crews worked to restore electricity even as flood waters inundated whole communities. More than 840,000 were in North Carolina - knocking out power for nearly one-fifth of the state.
"We have 4,200 damaged homes", he added, urging residents to not wade out into the streets because of the dangers posed by downed power lines. During Hurricane Matthew, she said, the nearby Lynches River had sent water into her mobile home.
As of 2:00 pm (1800 GMT), maximum sustained winds had weakened to near 45 miles (75 kilometers) per hour, but the NHC warned residents of risky storm surges and "catastrophic flooding".
"He has said they would do whatever it takes to see that everything is available for South Carolina", McMaster said.
North Carolina officials have reported at least seven storm-related fatalities with unconfirmed reports of a further three deaths.
The Cape Fear River in Fayetteville, North Carolina, is forecast to rise an astonishing 45 feet by Tuesday.
The rain was unrelenting in Cheraw, a town of about 6,000 people in northeastern SC. Storm conditions could also lead to tornadoes and landslides, officials said.
Pochettino confirms Lloris will remain Spurs captain after drink-drive sentence
Just as importantly for the home team, key midfielder Dele Alli is also expected to miss the match against the Reds, after picking up a hamstring injury with England.
South Carolina Governor Henry McMaster on Saturday announced the death of a 61-year-old woman who died when her auto hit a downed tree on a highway.
The Marines, the Coast Guard, civilian crews, and volunteers used helicopters, boats, and heavy-duty vehicles on September 15, to rescue scores of people trapped by Florence's shoreline onslaught, even as North Carolina braced for what could be the next stage of the disaster: widespread, catastrophic flooding inland.
The center said the storm would dump as much as 40 inches (102 cm) of rain along coastal areas of the Carolinas, as well as up to 10 inches in southwestern Virginia.
Sandie Orsa is waiting out Hurricane Florence in a hotel in Wilmington.
Duke Energy says heavy rains from Florence caused a slope to collapse at a coal-ash landfill at a closed power station near the North Carolina coast. Some area residents described a harrowing retreat as the storm hit.
"Don't go back until this storm passes and you get the official all clear", he said. But with radar showing parts of the storm over six Southeastern states and flood worries spreading into southern Virginia and West Virginia, North and SC were still in the bull's-eye.
The IRS said the policy will apply to people or businesses located within areas designated for individual assistance by the Federal Emergency Management Agency, or FEMA.
The remainder of northern SC into western North Carolina and southwest Virginia could see 5 to 10 inches of rainfall, with some isolated areas seeing 15 inches.
Flood waters had receded, and her husband was able to return home to retrieve their vehicle, blankets, food and clothing, Moore said.
Florence and Mangkhut roared ashore the same day, half a world apart, but the way they spread devastation was as different as water and wind.