XN000022-1972-10-17 — Page 8

SEPTEMBER'S WEATHER

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Tuesday, October 17, 1972

September 1972 was warmer than usual. The mean maximum temperature

of 31.0°C was the sixth highest on record for the month.

The atmospheric pressure was higher than normal during most of the

month and the mean monthly value of 1011.3 mb was the highest on record for

September.

On the first three days of the month a ridge of high pressure from

the Pacific anticyclone covered the south China coast and the weather was

fine apart from a few isolated showers.

From September 4 onwards, an anti-cyclone dominated China and mainly

fine and sunny weather persisted in Hong Kong during the next two weeks.

Scattered showers and thunderstorms developed on September 19 when

an upper-air disturbance affected Hong Kong. The weather became fine on the

following two days, but occasional showers and isolated thunderstorms occurred

again on the 22nd.

On September 24, a cold front moved southwards across the south

The weather

China coast causing periods of heavy rain and thunderstorms.

became cooler during the following two days and the minimum temperature of

the month, 22.8°C, was recorded on the 25th,

On the evening of September 28, a trough of low pressure passed

through the south China coast, bringing scattered thunderstorms. Some showers

were also experienced on the 29th. The weather, however, improved with some

sunny intervals on the last day of the month.

/During