The Hong Kong Observatory issued the Black Rainstorm Warning Signal at 4pm on Wednesday, before downgrading it to a red warning.

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Photo: Laurian Voute-de Ru.

The red signal indicates that heavy rain has fallen or is expected to fall generally over Hong Kong, exceeding 50 millimetres in an hour.

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Photo: The Observatory.

Earlier, the Observatory advised the public to take shelter and remain indoors.

The landslip warning and thunderstorm warning are also in force, and there is also a risk of flash flooding in the northern New Territories.

Some readers have reported flooding around Tai Tam Road on Hong Kong Island.

Other have reported that cab hailing app Uber is charging up to five times the regular amount for a taxi.

Super Typhoon Haima is moving towards the northern part of Luzon in the Philippines.

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Photo: 赤柱唔係, Terpe Fung, Kwan Yee Lam Penny‎, via Facebook.

It is expected to enter the northern part of South China Sea on Thursday.

YouTube video

Haima will edge close to the coast of Guangdong on Friday, the Observatory predicts.

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Additional reporting: Tom Grundy.

stanley leung

Stanley Leung

Stanley is a Media and Communications graduate from Goldsmiths College in London. He takes particular interest in visual journalism, having produced photographic and video work on a number of social and political issues. He has also interned at the current affairs service of RTHK’s TV division.