TROPICAL CYCLONES IN 2011
TABLE 4.4
FREQUENCY AND TOTAL DURATION OF DISPLAY OF TROPICAL CYCLONE WARNING SIGNALS : 1956-2011
| Year | Signals | Total duration | ||||||||
| 1 | 3 | 8 NW | 8 SW | 8 NE | 8 SE | 9 | 10 |
h
|
min | |
| 1956 | 5 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
191
|
25 |
| 1957 | 4 | 9 | 1 | 1 | 2 | 2 | 0 | 1 |
295
|
45 |
| 1958 | 4 | 5 | 0 | 0 | 1 | 0 | 0 | 0 |
214
|
5 |
| 1959 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
36
|
35 |
| 1960 | 11 | 7 | 0 | 2 | 2 | 2 | 1 | 1 |
432
|
35 |
| 1961 | 6 | 7 | 1 | 2 | 1 | 0 | 1 | 1 |
192
|
55 |
| 1962 | 4 | 3 | 0 | 1 | 1 | 0 | 1 | 1 |
158
|
10 |
| 1963 | 4 | 5 | 0 | 0 | 1 | 0 | 0 | 0 |
175
|
50 |
| 1964 | 11 | 14 | 1 | 3 | 5 | 3 | 3 | 2 |
570
|
15 |
| 1965 | 7 | 6 | 0 | 0 | 1 | 1 | 0 | 0 |
239
|
40 |
| 1966 | 6 | 5 | 0 | 0 | 2 | 2 | 0 | 0 |
284
|
40 |
| 1967 | 8 | 6 | 0 | 0 | 2 | 1 | 0 | 0 |
339
|
10 |
| 1968 | 7 | 7 | 0 | 1 | 1 | 0 | 1 | 1 |
290
|
10 |
| 1969 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
110
|
15 |
| 1970 | 6 | 8 | 2 | 1 | 2 | 0 | 0 | 0 |
286
|
45 |
| 1971 | 9 | 10 | 1 | 3 | 2 | 2 | 1 | 1 |
323
|
25 |
| 1972 | 8 | 6 | 0 | 0 | 1 | 1 | 0 | 0 |
288
|
20 |
| 1973 | 8 | 6 | 1 | 1 | 1 | 0 | 1 | 0 |
416
|
50 |
| 1974 | 12 | 10 | 0 | 0 | 2 | 1 | 1 | 0 |
525
|
20 |
| 1975 | 8 | 6 | 1 | 0 | 0 | 1 | 1 | 1 |
292
|
20 |
| 1976 | 6 | 6 | 0 | 0 | 1 | 2 | 0 | 0 |
351
|
30 |
| 1977 | 8 | 6 | 0 | 0 | 1 | 0 | 0 | 0 |
395
|
10 |
| 1978 | 8 | 9 | 1 | 1 | 3 | 2 | 0 | 0 |
462
|
10 |
| 1979 | 5 | 5 | 1 | 0 | 2 | 2 | 1 | 1 |
281
|
15 |
| 1980 | 10 | 8 | 0 | 0 | 1 | 1 | 0 | 0 |
414
|
5 |
| 1981 | 5 | 4 | 0 | 0 | 1 | 1 | 0 | 0 |
202
|
20 |
| 1982 | 7 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
247
|
35 |
| 1983 | 8 | 7 | 0 | 1 | 2 | 2 | 1 | 1 |
289
|
42 |
| 1984 | 6 | 6 | 0 | 0 | 1 | 0 | 0 | 0 |
280
|
2 |
| 1985 | 5 | 4 | 1 | 0 | 0 | 1 | 0 | 0 |
193
|
35 |
| 1986 | 6 | 7 | 0 | 1 | 1 | 0 | 0 | 0 |
305
|
0 |
| 1987 | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
165
|
45 |
| 1988 | 6 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
204
|
10 |
| 1989 | 7 | 8 | 0 | 0 | 2 | 2 | 0 | 0 |
306
|
10 |
| 1990 | 6 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
245
|
10 |
| 1991 | 8 | 6 | 0 | 0 | 1 | 1 | 0 | 0 |
349
|
55 |
| 1992 | 5 | 5 | 0 | 0 | 1 | 1 | 0 | 0 |
167
|
5 |
| 1993 | 8 | 9 | 0 | 0 | 2 | 4 | 0 | 0 |
325
|
40 |
| 1994 | 4 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
138
|
10 |
| 1995 | 8 | 6 | 2 | 2 | 1 | 1 | 0 | 0 |
348
|
50 |
| 1996 | 7 | 2 | 0 | 0 | 0 | 1 | 0 | 0 |
189
|
0 |
| 1997 | 2 | 3 | 0 | 1 | 1 | 0 | 1 | 0 |
97
|
30 |
| 1998 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
188
|
35 |
| 1999 | 10 | 13 | 4 | 3 | 2 | 0 | 2 | 1 |
520
|
0 |
| 2000 | 7 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
329
|
5 |
| 2001 | 6 | 6 | 1 | 1 | 2 | 1 | 0 | 0 |
253
|
35 |
| 2002 | 3 | 2 | 0 | 0 | 0 | 1 | 0 | 0 |
144
|
25 |
| 2003 | 4 | 5 | 1 | 1 | 1 | 1 | 1 | 0 |
158
|
0 |
| 2004 | 3 | 2 | 1 | 1 | 1 | 0 | 0 | 0 |
77
|
35 |
| 2005 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
142
|
45 |
| 2006 | 10 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
317
|
50 |
|
2007
|
4
|
3
|
0
|
1
|
0
|
0
|
0
|
0
|
86
|
50 |
|
2008
|
8
|
9
|
2
|
2
|
3
|
2
|
1
|
0
|
347
|
0 |
|
2009
|
13
|
9
|
1
|
1
|
1
|
2
|
1
|
0
|
255
|
30 |
| 2010 |
8
|
3
|
0
|
0
|
0
|
0
|
0
|
0
|
220
|
0 |
|
2011
|
8
|
5
|
0
|
0
|
0
|
1
|
0
|
0
|
213
|
0 |
| Total | 366 |
310
|
23
|
31
|
58
|
45
|
19
|
12
|
14878
|
29 |
| Mean |
6.5
|
5.5
|
0.4
|
0.6
|
1.0
|
0.8
|
0.3
|
0.2
|
265
|
41 |
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