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Precautionary Measures when Tropical Cyclone Warning Signals are in force


Tropical cyclones normally occur during the months of May to November, and are particularly prevalent during September.

Tropical cyclone advisory bulletins and/or warnings are issued by the Hong Kong observatory whenever a tropical cyclone centred within 800 km of Hong Kong poses a threat to the territory. 

For your own safety, you should stay alert at all times and be prepared to deal with changing conditions at short notice. Remember that areas that may have been previously sheltered may quickly become exposed.

Neither should you relax precautions when the tropical cyclone is moving away from Hong Kong, as high winds are likely to persist for some time. You should stay indoors where it is safe until winds moderate.

Information on other hazards associated with the tropical cyclone will be included in warning bulletins. When necessary, separate warnings of heavy rain, flooding and landslips will be issued.

Precautionary Measures

The Standby Signa No. 1 l LogoActions to take when a Standby Signal No.1 is in force:

If you are planning an outing, remember that there is a tropical cyclone near Hong Kong which may affect your plans. Beware that strong winds may occur over offshore waters. Beware of possible swells. Listen to radio and TV broadcasts or browse the Observatory website on the progress of the tropical cyclone.

The Strong Wing Signal No. 3 Logo Actions to take when a Strong Wind Signal No.3 is in force:

Secure all loose objects, particularly those on balconies and rooftops. Flower pots and other objects likely to be blown away should be taken indoors. Secure hoardings, scaffoldings and temporary structures. Drains should be cleared to avoid blockage and overflows. Stay away from the shoreline and not to engage in water sports. Fishing vessels should seek shelter without delay. Listen to radio and TV announcements and browse the Observatory website for further information about the tropical cyclone.

The No. 8 Northwest Gale or Storm Signal Logo The No. 8 Southwest Gale or Storm Signal Logo The No. 8 Northeast Gale or Storm Signal Logo The No. 8 Southeast Gale or Storm Signal Logo Actions to take when a Gale or Storm Signal No. 8 is in force:

Complete all precautions now before gales commence. Lock all windows and doors. Fit bars into positions and insert reinforced shutters and gates if available. Adhesive tape fixed to large window panes in exposed positions will reduce damage by broken glass.

Do not stand near windows on the exposed side of your home. Move all furniture and valuables away from these areas. Make sure you have a safe place to shelter, should windows be broken. Now is the time to decide which rooms you will use to shelter if the windows on the exposed side of your home become broken.

Owners of neon signs should arrange for the electricity supply to their signs to be switched off.

Park your car where it is least likely to be damaged.

Avoid staying in the street. Return home as soon as possible if conditions so permit.

The Increasing Gale or Storm Signal No. 9 LogoActions to take when an Increasing Gale or Storm Signal No. 9 is in force:

Stay indoors. Stay away from exposed windows and doors to avoid flying debris. Close all interior doors and make sure children are confined to the least exposed part of your home. Do not touch electrical cables that have been blown loose. You should fix broken windows and doors only when there is no danger in doing so.

If you are away from home, find a safe place and remain there until the danger is over.

The Hurricane Signal No. 10 Logo Actions to take when a Hurricane Signal No. 10 is in force:

The same precautions as above apply.

Remember that if the eye of the typhoon passes directly over Hong Kong, there may be a temporary lull lasting a few minutes to several hours. Do not relax your guard, as there will be a sudden resumption of violent winds from a different direction. Remain where you are if protected and be prepared for destructive winds.

Tropical Cyclone Home


Last revision date: <21 Dec 2012>