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Hong Kong Rainstorm Warning Signals & What They Actually Mean

March 26, 2021

Rains in Hong Kong can be particularly heavy during the rainy season (April – September). In order to notify the citizens and avoid any unnecessary casualties, the Hong Kong Observatory (HKO) creates a Rainstorm Warning System: Amber, Red and Black, to remind the public of the rain intensity in Hong Kong. 

Amber Rainstorm Warning Signal

The Amber Rainstorm Warning Signal indicates heavy rain has fallen or is expected to fall generally over Hong Kong, exceeding 30 millimetres in an hour, and is likely to continue.

What does this mean? Lives go on as usual, bring an umbrella. If you are caught outdoors, track the rainstorm radar here to plan your day.

(https://www.hko.gov.hk/en/wxinfo/radars/radar_range1.htm)

Red Rainstorm Warning Signal

Heavy rain has fallen or is expected to fall generally over Hong Kong, exceeding 50 millimetres in an hour, and is likely to continue.

What does this mean? Some services maybe disrupted, especially if it involves outdoor duties. If you are caught outdoors, find shelter and track the rainstorm radar here. You may want to stay indoor until the rainstorm passes.

Black Rainstorm Warning Signal

Very heavy rain has fallen or is expected to fall generally over Hong Kong, exceeding 70 millimetres in an hour, and is likely to continue.

What does this mean? Stay indoors, services will stop if it involves outdoor duties. If you are caught outdoors, find shelter and track the rainstorm radar here. Stay indoor until the rainstorm passes.

Please note some attractions like Ocean Park may be closed under the Rainstorm weather signal. You are advised to confirm the business hours with the attraction before your departure. 

Moreover, travel insurance usually does not reimburse any injuries or loss caused by bad weather. Therefore, you are strongly advised to stay indoors when Red or Black Rainstorm is issued. To keep yourself updated with the weather information in Hong Kong, download the Hong Kong Observatory app (MyObservatory) or check their website. Play safe!

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This is Gigi, an university student in Hong Kong. I love my home so much that I wish not only Hong Kong to be a better place, but also the others to know her authentic side.

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