1.2 NORTH INDIAN OCEAN TROPICAL CYCLONES
Tropical cyclone genesis regions are compared to the overall 10-year average in Figure 1-5.This year's North Indian Ocean tropical cyclones are listed in Table 1-5. The monthly distribution of tropical cyclones for each year since 1975 is shown in Table 1-6. Composites of the tropical cyclone best tracks for the Northern Indian Ocean appear following Table 1-6.
Figure 1-5. Comparison of the number of tropical cyclones that developed in Bay of Bengal and Arabian Sea for 2000 through 2004 and the 25-year average.
Table 1-5NORTH INDIAN OCEAN SIGNIFICANT TROPICAL CYCLONES FOR 2004(01 JAN 2004 - 31 DEC 2004) |
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| TC | NAME | PERIOD | WARNINGS ISSUED | EST MAX SFC WINDS KTS (M/SEC) |
MSLP (MB)* | ||||
| 01A | - | 05May-10May | 21 | 45 (22.5) | 991 | ||||
| 02B | - | 17May-19May | 6 | 60 (30) | 980 | ||||
| 03A | - | 01Oct-03Oct | 4 | 40 (20) | 994 | ||||
| 04A | - | 04Oct-07Oct | 13 | 40 (20) | 994 | ||||
| 05A | AGNI | 28Nov-03Dec | 14 | 65 (32.5) | 976 | ||||
| JTWC Total | 58 | ||||||||
| *MSLP Converted from estimated maximum surface winds using Atkinson/Holliday wind-pressure relationship | |||||||||
Table 1-6DISTRIBUTION OF NORTHERN INDIAN OCEAN TROPICAL CYCLONESFOR 1975 - 2004 |
|||||||||||||
|
YEAR |
JAN |
FEB |
MAR |
APR |
MAY |
JUN |
JUL |
AUG |
SEP |
OCT |
NOV |
DEC |
TOTALS |
|
1975 |
1 |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
0 |
1 |
2 |
0 |
6 |
|
0 1 0 |
0 0 0 |
0 0 0 |
0 0 0 |
2 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
1 0 0 |
0 2 0 |
0 0 0 |
3 3 0 |
|
|
1976 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
5 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 0 0 |
0 1 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 1 0 |
0 0 0 |
0 1 0 |
0 5 0 |
|
|
1977 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
0 |
2 |
5 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 1 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 0 0 |
1 1 0 |
1 4 0 |
|
|
1978 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
1 |
2 |
0 |
4 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
2 0 0 |
0 0 0 |
2 2 0 |
|
|
1979 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
2 |
1 |
2 |
0 |
7 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
1 0 0 |
0 1 0 |
0 0 0 |
0 0 0 |
0 1 1 |
0 1 0 |
0 1 1 |
0 0 0 |
1 4 2 |
|
|
1980 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
2 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 1 0 |
0 2 0 |
|
|
1981 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
1 |
3 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 0 0 |
1 0 0 |
1 0 0 |
2 1 0 |
|
|
1982 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
2 |
1 |
0 |
5 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
1 0 0 |
0 1 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 2 0 |
1 0 0 |
0 0 0 |
2 3 0 |
|
|
1983 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
3 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 0 0 |
0 1 0 |
0 1 0 |
0 0 0 |
0 3 0 |
|
|
1984 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
1 |
2 |
0 |
4 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
2 0 0 |
0 0 0 |
2 2 0 |
|
|
1985 |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
0 |
2 |
1 |
1 |
6 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 2 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 2 0 |
0 1 0 |
0 1 0 |
0 6 0 |
|
|
1986 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
3 |
|
0 1 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 2 0 |
0 0 0 |
0 3 0 |
|
|
1987 |
0 |
1 |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
2 |
1 |
2 |
8 |
|
0 0 0 |
0 1 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 2 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 2 0 |
0 1 0 |
0 2 0 |
0 8 0 |
|
|
1988 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
2 |
1 |
5 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
1 1 0 |
0 1 0 |
1 4 0 |
|
|
1989 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
0 |
3 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 1 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
1 0 0 |
0 0 0 |
1 2 0 |
|
|
1990 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
4 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 1 |
1 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 1 |
0 1 0 |
1 1 2 |
|
|
1991 |
1 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
1 |
0 |
4 |
|
0 1 0 |
0 0 0 |
0 0 0 |
1 0 0 |
0 0 0 |
0 1 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
1 0 0 |
0 0 0 |
2 2 0 |
|
|
1992 |
0 |
0 |
0 |
0 |
1 |
2 |
1 |
0 |
1 |
3 |
3 |
2 |
13 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
1 0 0 |
0 2 0 |
0 1 0 |
0 0 0 |
0 0 1 |
0 2 1 |
2 1 0 |
0 2 0 |
3 8 2 |
|
|
1993 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
2 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
2 0 0 |
0 0 0 |
2 0 0 |
|
|
1994 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
1 |
1 |
0 |
5 |
|
0 0 0 |
0 0 0 |
0 1 0 |
1 0 0 |
0 0 0 |
0 1 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 1 0 |
0 0 0 |
1 4 0 |
|
|
1995 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
2 |
0 |
4 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 1 0 |
2 0 0 |
0 0 0 |
2 2 0 |
|
|
1996 |
0 |
0 |
0 |
0 |
1 |
3 |
0 |
0 |
0 |
2 |
2 |
0 |
8 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
1 2 0 |
0 0 0 |
0 0 0 |
0 0 0 |
1 1 0 |
2 0 0 |
0 0 0 |
4 4 0 |
|
|
1997 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
1 |
1 |
0 |
4 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
1 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
1 0 0 |
0 1 0 |
0 1 0 |
0 0 0 |
2 2 0 |
|
|
1998 |
0 |
0 |
0 |
0 |
2 |
1 |
0 |
0 |
1 |
1 |
2 |
1 |
8 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
1 1 0 |
1 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 1 0 |
2 0 0 |
1 0 0 |
5 3 0 |
|
|
1999 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
2 |
0 |
0 |
5 |
|
0 0 0 |
0 1 0 |
0 0 0 |
0 0 0 |
1 0 0 |
0 1 0 |
0 0 0 |
0 0 0 |
0 0 0 |
2 0 0 |
0 0 0 |
0 0 0 |
3 2 0 |
|
|
2000 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
1 |
1 |
4 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 2 0 |
1 0 0 |
0 1 0 |
1 3 0 |
|
|
2001 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
1 |
1 |
0 |
4 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
1 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 1 0 |
0 1 0 |
0 0 1 |
0 0 0 |
1 2 1 |
|
|
2002 |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
0 |
0 |
2 |
1 |
5 |
|
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 2 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 0 0 |
0 2 0 |
0 1 0 |
0 5 0 |
|
| 2003 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3 |
| 0 0 0 | 0 0 0 | 0 0 0 | 0 0 0 | 1 0 0 | 0 0 0 | 0 0 0 | 0 0 0 | 0 0 0 | 0 0 0 | 1 0 0 | 0 1 0 | 2 1 0 | |
| 2004 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 2 | 1 | 0 | 5 |
| 0 0 0 | 0 0 0 | 0 0 0 | 0 0 0 | 0 2 0 | 0 0 0 | 0 0 0 | 0 0 0 | 0 0 0 | 0 2 0 | 1 0 0 | 0 0 0 | 1 4 0 | |
|
(1975-2004)
|
|||||||||||||
|
MEAN |
0.1 | 0.1 | 0 | 0.1 | 0.7 | 0.6 | 0 | 0 | 0.3 | 1.0 | 1.3 | 0.5 | 5 |
|
CASES |
3 | 2 | 1 | 4 | 23 | 17 | 1 | 1 | 9 | 30 | 40 | 16 | 147 |
|
The criteria used in TABLE 1-6 are as follows: |
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|
1) If a tropical cyclone was first warned on during the last two days of a particular month and continued into the next month for longer than two days, then that system was attributed to the second month.
|
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|
2) If a tropical cyclone was warned on prior to the last two days of a month, it was attributed to the first month, regardless of how long the system lasted.
|
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|
3) If a tropical cyclone began on the last day of the month and ended on the first day of the next month, that system was attributed to the first month. However, if a tropical cyclone began on the last day of the month and continued into the next month for only two days, then it was attributed to the second month.
|
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