President Donald Trump issued a disaster declaration for North Carolina, the White House said Saturday.
Near the Sutton Power Plant in Wilmington, coal ash leaked from a Duke Energy landfill.
At 2300 EDT (0300 GMT), the NHC said Florence had maximum sustained winds of 40 miles per hour (65 km), and was slowly drifting westward over SC. Florence was moving west at 8 miles per hour.
While local residents may have felt some minor relief that a more severe storm would not hit the coastline, Florence was still projected to carry well into southeast North Carolina and into the heart of northeast SC.
Florence is now the third storm to set a tropical cyclone state rainfall record in just the last 12 months.
Forecasters say heavy rains also are expected early in the week in parts of West Virginia and the west-central portion of Virginia. But the number of actual people without power is far greater, since a single customer can represent an entire family.
On Thursday, Florence was a Category 3 hurricane on the five-step Saffir-Simpson scale with 120-mph winds (193 km).
At the height of the flooding, some residents were trapped in attics, and others couldn't escape because roads were rendered impassable by rising waters, including from the Neuse River.
Heavy rains bands are still coming onshore in eastern SC and North Carolina on Sunday morning. By Tuesday, officials expect more than 62 feet for the river that runs through the center of the city.
Some roofs destroyed and major structural damage to houses. Many rivers "are still rising, and are not expected to crest until later today or tomorrow". Hunt said Matthew caught them by surprise with flooding in the middle of the night.
Hurricanes are violent storms that can bring devastation to coastal areas, threatening lives, homes and businesses.
As we move into this evening, there is a 40 percent chance of showers. Whether they stay or go, they'll have damage to contend with.
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Damage to homes in her neighborhood was "horrible", she said. "We're going to have to redo the whole inside". "Or bury us, or something", he said as floodwater crept upon his porch.
As all this happened, there were other things that happened on the internet too. "I trust in the Lord".
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.
The fear of sudden, massive river flooding isn't limited to Lumberton. His state has already endured record rainfall, with much more forecast to come.
New Bern spokeswoman Colleen Roberts said 455 people were safely rescued in the town of 30,000 residents. And if those shelters fill up, he said, the state will open up more.
Coast Guard helicopter crews from Air Station Savannah searched the entirety of the Georgia and SC coast without finding anyone in need.
In Goldsboro, home of Seymour Johnson Air Force Base, roads that frequently flood were already closed Saturday by rushing water.
Nearby Pender County, north of Wilmington, also is running out of fuel, Commissioner Jackie Newton said. "We want you home, but you can't come yet". In previous hurricanes in North Carolina, residents lived in trailers while they rebuilt or found permanent housing. Authorities have launched investigations.
Meanwhile, half a world away, Hong Kong was braced for the strongest typhoon to hit in almost two decades.
Officials said people across Cumberland County are in danger of losing their lives.
Officials in SC said a 61-year-old woman died when her auto struck a tree that had fallen across a highway near the town of Union. The fifth was a woman who died from cardiac arrest in the town of Hampstead where some roads were blocked by uprooted trees.