-
.5
Saturday, November 18, 1972
There was some temporary improvement on October 15 as a ridge of
high pressure from the Pacific extended westwards across south China.
However, the skies became cloudy again on October 16 as an upper-air
disturbance moved from west to east across Hong Kong and showers were
reported until October 17.
During the period October 18 to 21, Hong Kong was under the
influence of an easterly airstream from the Pacific and conditions were
sunny and humid with slowly rising temperatures. The hottest day of the
month occurred on October 20 when a maximum temperature of 30.9°C was
recorded.
On October 21, a cold front passed through Hong Kong and the
air temperature fell rapidly to a minimum of 21.1°C during the following
night. The relative humidity also dropped to below 65 per cent and a
Yellow Fire Warning was issued on October 21.
This was the first warning issued since the introduction of the
new fire warning system earlier in the month.
Winds over Hong Kong were fresh to strong and the Strong Monsoon
Signal was hoisted at 7.15 p.m. on October 21 and lowered at 1.30 p.m.
the next day. The werther improved after the passage of the cold front
and the last six days of the month were fine with long periods of sunshine.
During the month, severe tropical storm
:
'Kathy', typhoon "Marie',
typhoon 'Nancy' and typhoon 'Olga' reported over the Pacific but they did not
affect Hong Kong.
/The month's