XN000022-1973-06-29 — Page 16

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Friday, June 29, 1973

Nos. 9 & 10

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These two signals imply that the centre

of a severe tropical storm or typhoon will come very close to Hong Kong. When this happens the direction of the wind can be

expected to change very quickly.

Mr. Bell warned that it is not possible to predict the future

path or intensity of tropical cyclones with certainty.

Although the errors of 24-hour forecast positions in recent years

have been on average less than 100 miles it is nevertheless still possible

for a tropical cyclone occasionally to move in an unexpected direction,

or at a different speed, or to intensify or weaken more rapidly than forecast.

A small change in the distance of the nearest approach of the

centre can also make a tremendous difference to its effects on Hong Kong.

he said.

The public should therefore listen to weather broadcasts to keep

abreast of developments and should not relax precautions until all signals

are lowered.

When No. 8, 9 or 10 signal is displayed, special weather bulletins

are prepared, every hour and broadcast at two minutes before the hour and

at half past the hour throughout the day and night.

These pulletins give the latest information on the progress of the

storm and the position of its centre.

Residents.are strongly advised not to set out for long pleasure

trips in small boats and not to leave on camping or walking holidays to remote

parts of the New Territories when the standby signal, No. 1, is hoisted.

/All schools .............