The death toll from Florence rose to at least 32, and crews elsewhere used helicopters and boats to rescue people trapped by still-rising rivers.
As Florence stormed ashore, it backed up rivers with its powerful surge.
"The next half of the tree went, hit the roof and knocked the chimney down onto my first-floor den and that knocked a hole in the roof", Wilmington resident Alex Hall said. It has seen more than 86 inches of rain this year; the average to date is about 43 inches.
People in the affected zone say navigating the region remains extremely challenging as some roadways caved in and crumbling, while others have become impassable because of flood water.
North Carolina emergency department officials said 23 truckloads of Meals, Ready to Eat - packaged U.S. military rations - and crates of bottled water had been sent into Wilmington.
"BREAKING. We've observed a one-minute period of sunshine at the NWS Raleigh office", the NWS said on Twitter.
A day earlier, Hurricane Florence had covered the course with six inches of rushing water, he said. "Portions of the Carolinas, mid-Atlantic states, and Southern New England are expected to receive an additional two to five inches of rain.with isolated maximum amounts of eight inches possible".
Rescue teams searched overnight for a one-year-old boy who was swept away outside Charlotte, North Carolina, after rushing water pushed his mother's auto off the road, the Union County Sheriff's Office said on Facebook. About 14,000 people are in shelters, officials said. The water receded Sunday, leaving hundreds of fallen trees and "pools of water everywhere".
"But they are evaluating that, and it could change at any time", Collins said about 3 p.m. Monday.
The unsafe tropical storm made landfall in North Carolina on September 14th and then pushed through the Southeast.
"I lost everything in the flooding", he said.
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As of Monday morning, many roads in North Carolina, including sections of I-95 and I-40, were washed out due to flooding.
About 17,000 customers were without service in SC, mostly in northeastern SC near the North Carolina state line.
Members of the Coast Guard help a stranded motorist in the flood waters caused by Hurricane Florence in Lumberton, North Carolina, Sept. 16, 2018. State officials said there had been a small dam breach that did not cause any significant damage and they were monitoring other structures closely. He urged residents who were evacuated from the hardest-hit areas to stay away because of closed roads and catastrophic flooding that submerged entire communities.