1218 SUPPLEMENT TO THE HONgkong govt gaZETTE OF 29TH OCT., 1887.
TABLE XIII.
RAINFALL AT DIFFERENT STATIONS.
OBSERVATORY.
STONE CUTTERS' ISLAND.
VICTORIA PEAK.
DATE.
Amount.
Duration.
Amount.
Amount.
1887.
ins.
hrs.
ins.
ins.
Sept.
1,.......
2,
3,
0.885
4,
0.035
"
5,
0.31
0.71
0.13
0.19
*..
#
6,
7,.
0.065
0.05
8,
9,.
10,.
1
11,.
1.235
15
1.20
1.71
12,
0.680
0.90
1.51
99.
25
13,
0.165
دو
14,.
0.640
7
0.63
0.44
15,.
0.075
1
16,
0.010
0.10
17.
5.875
14
6.36
1.72
19
18,
0.870
0.35
29
19,
0.005
29
20,
0.185
3
0.27
22
21,
0.200
0.16
0.40
""
25.
22,
0.005
""
23,.
ララ
24,
0.035
25,.
0.235
26,
0.095
0.27
0.21
0.22
0.09
27,
""
"
28,
29,
0.025
}}
30,
0.265
0.38
0.10
0.24.
"
11.085
76
11.31
7.34
A great number of typhoons were experienced in the neighbourhood of the Colony in the course of the month. They were generally preceded by thunderstorms, which occasionally occur all round the centre beyond the area where the wind is strong. Nearer the centre but before the wind began to rise, the clouds assumed the form of Roll-cumulus which prevails till full typhoon force is reached. The mean height of the mercurial column during this month was below the average of previous Sep- tembers, but not very much, as the high pressure area all round the typhoon counter-effects the low pressure near the centre. The solar radiation was both with regard to intensity and to duration below the average.
The true air-temperature, the tension of water-vapour and the rain-fall were above the average.
The mean force of the wind was much above the average as the surrounding calm ring is not sufficient to counteract the strength of the wind nearer the centre. The early morning hours on the 11th furnish a striking instance of the hot, dry and close weather, that precedes a typhoon.
Hongkong Observatory, 24th October, 1887.
W. DOBERCK,
Government Astronomer.
Printed and published by NORONHA & Co., Printers to the Hongkong Government, Nos. 5, 7, and 9, Zetland Street.
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