Alert System

Red
Condition
  • Gusts in Hong Kong, which are caused by tropical cyclone, are going to reach or have reached 88 km/h (Force 10 or above in the Beaufort Wind Force Scale).
Recommended Action
  • Precautions against losses should be completed as soon as possible.
Remark
  • Alert status update will be issued at any time when necessary.
Yellow
Condition
  • There is an elevated risk that Hong Kong will be affected by a tropical cyclone in the next 48 hours, or
  • Gusts in Hong Kong, which are caused by tropical cyclone, have reached 63 km/h (Force 8 or above in the Beaufort Wind Force Scale).
Recommended Action
  • Check the latest alert advisory and tropical cyclone advisory for tropical cyclone information, and take suitable precautions to prevent losses.
Remark
  • At least one alert status update will be issued a day.
Green
Condition
  • Hong Kong may be affected by a tropical cyclone in the coming future.
Recommended Action
  • Check the latest alert status update for tropical cyclone information.
Remark
  • At least one alert status update will be issued a day.
Blue
Condition
  • No tropical cyclone is expected to affect Hong Kong.
Recommended Action
  • Read our website for latest information.

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