99
487
This shows a great difference between the angle to the N and to the S of the centre. To the north the angle is small and to the south large. This is accounted for by strong N monsoon prevailing at the time. The winds at a distance towards the N of the centre blew very nearly straight towards it, and to the south of the centre the winds were deflected towards the north and it is seen that the wind circulation there was, for a very short time only, under the direct influence of the storm area, the N monsoon quickly making itself felt again. The progressive motion of the typhoon towards the N and NE against a strong monsoon must have been caused by the air motion prevailing at some height, the NE monsoon frequently being of no great depth. Owing to the temperature being lower over Asia than over the Pacific, gradients at a moderate height above sea level were inverted with lower pressure over Asia than over the Pacific and the centre would move so as to keep that high pressure area on its right hand.
On October 10th on an average the wind blew with force 10 within a distance of 100 miles of the centre, between 100 and 150 miles with force 9, and between 150 and 250 miles with force 7. The winds were stronger to the north than to the South of the centre and during midday on the 10th typhoon force was felt in some places at a distance of 150 miles to the NNW of the centre i. e. in the northern part of the Formosa Channel. On the 11th October the typhoon having filled to a great extent the force decreased somewhat. On that day the average force was 9 within a 100 miles of the centre, between 100 and 150 miles it was force 7 and between 150 and 250 miles force 6. Between October 10th at 9 a. and October 11th at noon the wind forces between the centre and a distance of 250 miles were as follows: on an average NNE of the centre force 8, SSE force 7, SSW force 6, WSW force 7, WNW force 7, NNW force 10.
It was densely overcast within 400 miles to the north, within 170 miles to the northwest, within 150 miles to the west, and within 170 miles to the south of the centre.
Heavy rain fell within 250 miles to the north, within 70 miles to the northwest and west, and within 100 miles to the south of the centre. Drizzling rain and light showers prevailed 50 miles beyond these distances respectively.
A heavy sea prevailed within a distance of 300 miles to the north of the centre and nearer to the centre e. g. in the Formosa Channel it was of an exceptionally severe character.
A gradient of 0.03 inch in 15 miles corresponded to force 6, 0.04 inch to force 7, 0.06 inch to force 9, 0.15 inch to force 11, 0.20 inch to force 12. The steepest gradient found was 0.33 inch in 15 miles.
DATE.
Hour.
Bar.
Temp.
HOIHOW.
WIND.
Dir. Force.
Oct. 10
3 a.
6
9
29.90
77
Noon
**
සයත
3 p.
6
Midt,
3 a.
.87
.80 80
79
11
6
9
.96 75
N
Noon
3 p. .87 78
NW
6
9
.97
73
NE
Midt.
DE 18 18 12 22:
N
W
W
SWATOW.
Oct. 10
3 a
29.60
75
6
9
.65 78
Noon
3 p.
.58 88
6
9
.64 77
Midt.
il
3 Br
.67
6
9
.81 75
Noon
en to a
3 p. .79
6
9
Midt.
D
.92
12 18 18 12 18 18 12:
N
6
NNW
NW
73
NNW
WNW
78
NNW
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2
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Weather.
Rain. Bar.
29.74 .72
74 NNW
73
0.00
.77
77 NW/W
.71 84 NW
.64
.69
.76
.77
.76
.78
0.00
.84 77 .82
.80
.86
.95
.96
PARBRIENRIFF Temp.
HONGKONG.
WIND.
Dir. Force.
Weather.
2
C
3
2
84
80
79 NNW
75 N/W
74 NNW
73 W/N
N
82 NNW
83
79 N/E 2
75
N
71
N/E
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3
1
0.00
2
2
LAMOCKS.
Rain.
Bar.
Temp.
BREAKER POINT.
WIND.
Dir. Force.
29.65
74 NNW
4
.60 74
4
⠀ ⠀ ⠀ ⠀ ⠀ ⠀⠀
0.00
.60 80 NW
.51
85
.49
87 .51 82
.65 78
.67
.70
75 78 .72 73 .78 74 .79 79
NNW
.80 78
.84 76
N
.93 72
.93
70
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Rain,
0.00
***
**
om
0.00
omg
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CHAPEL ISLAND.
29.61
75
NE
C
29.57
.58 75 NNW
3
.52 72
6
0.00
.60 75
0.00
.53 78
NW
.45 74
.50
80
.39 76
.55
80
.60 78
.52
.63 76
.65 74
.53 73 .55
.67 72
.60 67
0.00 .78
.77 76
73
WNW
cm
0.00 .70 70
C
.80 77 NW
.74 68 .75
75
.83 74
.81
.93
72
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72
N
C
$
.55 72 NNE
0.00
: 2
N
10
.47 75 NNW
8
74
7
NW
6 omd
72
W
WSW
SW WNW
N
5
0
omd
0.00
NNE
GE
.93
71
.90
70
WNW
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