Typhoon Mangkhut slammed into Hong Kong, and the scenes were apocalyptic

(Photo by Lam Yik Fei/Getty Images)Windows of a commercial building damaged by Typhoon Mangkhut.

Typhoon Mangkhut has crossed into mainland China where it is expected to continue weakening after cutting a deadly swathe across The Philippines and causing chaos in Hong Kong.

At least 64 people were killed in The Philippines, according to AP, and the normally bustling city of Hong Kong was effectively shut down as the storm battered the island.

Mangkhut has now been downgraded to a severe typhoon, having approached the coast as a Category 5 storm — the strongest possible — with winds of up to 269km/h.

Hong Kong airport — one of the most important global transit hubs — was closed, with over 500 flights cancelled and some 100,000 passengers affected, according to a Bloomberg report. The airport is operating on Monday, but flights across Asia are expected to be affected for some time.

Casinos in the gambling centre of Macau were shut down and some 20,000 homes were left without power, the South China Morning Post reported.

Authorities in Hong Kong issued a signal 10 — the strongest possible storm warning — as the storm hit the busy financial centre.

Videos posted by residents showed the incredible power of the typhoon as it caused buildings to sway, sucked reams of documents out of the shattered office windows, tore down scaffolding and pushed walls of water into low-lying parts of the island.

Here are some of the videos.

The storm smashed windows on office buildings and sucked out documents

Winds tore bamboo scaffolding away from buildings

A few people either couldn’t make it to shelter or ignored the warnings to stay inside

There were astonishing videos of the storm surge inundating the island

There was also a huge storm surge at Shenzhen, a mainland city close to Hong Kong. This shows the water crashing into the ground floor of the Sheraton in the city.

The winds were strong enough to roll trucks

In one positive report, more than 300 dogs in a shelter were reported safe despite damage to the building housing them

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