In Hong Kong on Monday, crews were clearing fallen trees and other wreckage left when the financial hub felt the full brunt of the storm on Sunday. Radar showed 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 AP said.
In Hong Kong, a video posted online by residents showed the top corner of an old building break and fall off while in another video, a tall building swayed as strong winds blew.
Nearby Macau even shut down its casinos for the first time in its history, writing off $186 million in revenue.
Police guarded the door of one store, and only 10 people were allowed inside at a time.
"Remember: Most storm deaths occur from drowning in fresh water, often in cars", Gov. Cooper said.
More than 105,000 people fled their homes in the largely rural region.
The Shenzhen airport, shut since midnight, will be closed until 8:00 a.m. (2400 GMT) on Monday.
Hong Kong authorities have been warning residents about the storm for days.
Streets were flooded and police chief Keith Thomas warned people not to drive, but the local food and petrol store had customers. Buildings across the city were either boarded up or had their windows taped in order to mitigate the damage of broken glass.
CNN are reporting that more than 550 flights have been canceled at airports in Hong Kong, and disrupting the travel plans of over 100,000 customers, while most of Hong Kong's public transport has been suspended.
The Philippines is routinely hit during the typhoon season but the strength of Manghukt evoked memories of the deadliest storm on national record - Super Typhoon Haiyan - which killed more than 7,000 in 2013.
Roughly 15,000 people are in shelters across North Carolina, according to The Greenville News, and The State reports more than 4,000 people remain in shelters in SC. Flights have been canceled in Guangzhou and the neighboring island province of Hainan.
Residents and relatives of miners in Itogon township, Benguet province in the northern Philippines, carry their belongings as they evacuate to following landslides triggered by Typhoon Mangkhut burying an unknown number of miners and isolating the township Sunday, Sept. 16, 2018.
A girl walks on debris caused by Typhoon Mangkhut on the Hong Kong waterfront.
Nearly five million people, almost a quarter of whom survive on just a few dollars per day, live in the storm's path.
Philippine president Rodrigo Duterte arrived in the affected province in Sunday to assess the damage and speak to disaster relief officials.
Most of the deaths in the Philippines were caused by landslides in the Cordillera and Nueva Vizcaya regions, officials say.
He added: "In some areas where the eye of the storm hit, it seems as if nothing has been left undamaged".
Both Vietnamese and worldwide weather stations have predicted that the storm turned depression will directly affect the northern and northern central regions.
The typhoon slammed the coast of Jiangmen city in southern China's Guangdong province on Sunday evening packing winds up to 162 km per hour.