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OpinionLetters

Letters to the Editor, July 26, 2017

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Ferry services were suspended when the No 8 tropical cyclone signal was raised on Sunday. Photo: Felix Wong
Letters

Storm warning system should be updated

I noticed on the Hong Kong Observatory website that we are celebrating 100 years of typhoon signals. Doesn’t that suggest that it may be time for a major revision? The current system is based on The Beaufort Scale of wind-force, a centuries old system ­developed for mariners in ­sailing vessels.

The No 8 signal means that gale-force winds are expected (Beaufort 8, 34-40 knots, 63-74 km/h) and Hong Kong closes down. Imagine if gales caused a shut-down in Europe; the place would be closed for half the year.

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In recent years, tropical ­cyclone path prediction has ­advanced greatly and satellite imaging and radar allow the Observatory to provide amazingly accurate forecasts. Why is it using its cyclone warning ­system which hasn’t seen any ­updating since 1973 – and that change was just about wind direction?

I do understand the real ­danger posed by a full-blown ­typhoon and the need for people to get into shelter.

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I have been out in the “supreme wind” and it has amazing force. However, to close down a modern city for a gale is a bit of a joke. The No 8 also invalidates most driving ­insurance, adding to the ­inconvenience.

The Observatory does a really excellent job and it is a pity to see its great work let down by an outdated tropical cyclone warning system.

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