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Tuesday, January 16, 1973
LAST MONTH'S WEATHER WAS FAIRLY NORMAL
Christmas Was Warner Than Usual
Apart from being slightly more cloudy than usual, December 1972
was a fairly normal month, according to the Royal Observatory.
At the beginning of the month, the south China coastal areas
were under the influence of a continental northeasterly airstream and
the weather in Hong Kong was generally sunny and dry.
Temperatures during the first two days were slightly below normal;
but as the northeasterly airstream weakened, winds in Hong Kong turned
to easterly and much warmer weather was experienced.
From December 4 to 7, the daily mean temperature was above 20°C,
while the highest temperature of the month, 25.2°C, was recorded on December 7.
However, a cold front passed south across Hong Kong the same
evening and resulted in slightly cooler weather the next day.
Fine and mild conditions prevailed in Hong Kong from December 9 to 11.
Meanwhile the seasonal continental anticyclone north of the
Tibetan Plateau intensified and spread southeastwards.
A marked surge of the winter monsoon reached Hong Kong during the
morning of December 12 and necessitated the hoisting of the Strong Monsoon
Signal at 4.30 a..
Strong gusty northerly winds persisted until the next morning when
the Strong Monsoon Signal was lowered at 11.10 a.m.
/During