NANNING, July 19 -- Typhoon Rammasun is causing chaos in south China.

Typhoon Rammasun, believed to be the strongest to hit south China in 41 years, made its third landfall in Guangpo, Fangchenggang City, Guangxi Zhuang Autonomous Region, at around 7:10 a.m., according to the regional flood control headquarters.

Gales and strong downpours have struck a number of coastal cities, including Beihai, Qinzhou and Fangchenggang, felling trees and causing blackouts.

In Beihai, fallen trees and powerlines have blocked major roads and damaged buildings, with some roofs blown away. Dai Yanhui, a Beihai resident, told Xinhua that he felt his house shaking in the ferocious winds.

"It is the biggest typhoon I have experienced in years," Dai said.

The typhoon paralyzed the power network in the city. As of 9 a.m., power had not been restored.

In Fangchenggang, roads are strewn with garbage and trees. Gas stations are temporarily closed.

Rammasun has grounded planes in Nanning, the regional capital. By 9:30 a.m., all inbound and outbound flights at Nanning Wuxu International Airport had been canceled or delayed, stranding some 1,300 passengers.

Typhoon Rammasun made first landfall at Wenchang City in Hainan Province on Friday afternoon, and a second landfall in Zhanjiang City in south China's Guangdong hours later.