Super Typhoon Ragasa wreaked havoc across Hong Kong on Wednesday, with strong waves shattering the glass doors of an Ocean Park hotel, and violent winds blowing a barge ashore and tearing air conditioning units from homes.

Dubbed the “king of storms” by mainland weather authorities, Ragasa maintained winds of 220km/h (137mph) near its centre when the No 8 warning signal was issued on Tuesday afternoon.

The signal was raised to No 9 and then to No 10 early on Wednesday, when it was closest to Hong Kong at a distance of 120km (74.5 miles) south of the city.

After remaining in force for 12 hours, the weather forecaster downgraded the No 10 warning signal to No 8 at 1.20pm on Wednesday.

Online videos showed waves crashing through the glass doors of Fullerton Hotel Ocean Park in Aberdeen, sweeping staff off their feet and flooding the lobby.

A Post reporter later saw hotel staff clearing debris, mopping up water, and sweeping tree branches back outside.