and
West
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the
craft
dually
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f being
depth
16
ipping
ide
2
Ref.:
CO 537/1427
THE NATIONAL ARCHIVES
2
restrictions. Further information is given in the enclosed 'Terms and Conditions of supply of National Archives' leaflet
Please note that this copy is supplied subject to the National Archives' terms and conditions and that your use of it may be subject to copyright
Jay.
ition
to
>le from
>uld
:
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loon.
00053
Direction of Strong Winds in Kowloon.
The following tables give the frequency of occurrence of strong
winds from different directions during the 5-year period, 1935-1939. The results were taken from the records of a Dines anemometer, whose
Table 1 gives head if 40 ft. above the roof of the Observatory.
the number of hours on which hourly mean winds of 20-39 m.p.h. were recorded, for different directions, and Table 11 similarly repre-
sents winds of 40 m.p.h. and over. Directions are given in compass points (8- east and so on). All winds given in Table 11 were due
to typhoons.
TABLE 1.
FREQUENCY OF WINDS OF 20-39 M.P.H.
FROM DIFFERENT DIRECTIONS.
2
Cms
Ref.:
THE NATIONAL ARCHIVES
CO 537/1427
restrictions. Further information is given in the enclosed Terms Please note that this copy is supplied subject to the National Archives' terms and conditions and that your use of it may be subject to copyright
and Conditions of supply of National Archives' leaflet.
Dir.
No.
Dir.
No.
*
Dir.
No.
Dir.
No.
70
1
16
0.6
9
106
4.1
17
·
25
1
2
5
0.2 10
11
0.4
18
4
0.1 26
5
0.2
3
3
0.1
11
5 0.2
19
36
1.4 27
2
7
0.3 12
3
0.1
20
15 0.6 28
2
38
1.5
13
8
0.3
21
1
29
3
7
8 (E)
14 18.5 479 1169 45.1 15
648
25.0 16 (S)
2
0.1
22
-
30
5
0.2
23
31
24(W) 1
7 32(N) 10
0.3
0.4
TABLE 11.
FREQUENCY OF WINDS OF 40 M.P.H.
AND OVER FROM DIFFERENT
DIRECTIONS.
Dir.
No.
Dir.
No.
Dir.
No. Dir.
No.
12345673
8
11272I2!
9
17
25
-
10
18
26
15 11
1
8
19
27
8 12
8
20
-
28
8 13
23
21
29
-
14
22
30
23
31
24 (W)
32 (N)
15 15
16(S)
It will be seen that 89% of all the winds given in Table 1 blew from directions 6, 7 and 8 (ENE, E/N and E). For this dis- tribution of wind-directions, the most suitable orientation of an airport runway would be 79° (E/N). On the average, such a runway
Ins
N
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