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TROPICAL CYCLONES IN 2004

SIX-HOURLY POSITION AND INTENSITY DATA OF
TYPHOON SONGDA (0418)

Month Date Time
(UTC)		 Intensity Estimated minimum
central pressure
(hPa)		 Estimated maximum
surface winds
(m/s)		 Lat.
°N		 Long.
°E
Aug 27
1200
T.D.
1000
13
10.8
166.9
1800
T.D.
996
16
11.1
165.7
28
0000
T.S.
992
18
11.3
165.0
0600
T.S.
988
21
11.9
164.2
1200
S.T.S.
980
26
12.3
163.1
1800
S.T.S.
980
26
12.8
161.6
29
0000
S.T.S.
980
26
13.2
160.3
0600
S.T.S.
975
29
13.7
158.8
1200
S.T.S.
975
29
14.2
157.2
1800
S.T.S.
975
29
14.6
155.8
30
0000
S.T.S.
970
31
14.9
154.4
0600
S.T.S.
970
31
15.4
152.8
1200
T.
965
34
15.5
151.5
1800
T.
955
39
16.0
150.5
31
0000
T.
945
44
16.3
149.5
0600
T.
935
49
16.7
148.5
1200
T.
930
52
17.3
147.6
1800
T.
930
52
17.7
146.7
Sep
1
0000
T.
930
52
18.4
146.3
0600
T.
930
52
19.6
145.3
1200
T.
930
52
20.1
143.6
1800
T.
930
52
20.7
142.3
2
0000
T.
930
52
21.1
141.0
0600
T.
935
49
21.6
139.8
1200
T.
935
49
21.7
138.5
1800
T.
935
49
21.8
137.4
3
0000
T.
935
49
22.0
136.4
0600
T.
935
49
22.3
135.2
1200
T.
935
49
22.3
134.0
1800
T.
935
49
22.6
133.2
4
0000
T.
935
49
23.2
132.1
0600
T.
935
49
24.0
131.2
1200
T.
935
49
24.3
130.4
1800
T.
935
49
25.0
129.7
5
0000
T.
935
49
25.7
129.0
0600
T.
935
49
26.4
128.2
1200
T.
935
49
26.8
127.9
1800
T.
940
47
27.7
127.2
6
0000
T.
945
44
28.4
127.1
0600
T.
945
44
29.3
126.9
1200
T.
945
44
29.9
127.2
1800
T.
950
42
31.1
127.9
7
0000
T.
950
41
32.6
129.5
0600
T.
950
41
35.3
132.2
1200
T.
960
36
38.7
136.0
1800
S.T.S.
975
29
41.6
139.3
Became Extratropical

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