2004 Hurricane/Tropical Data for Southern Indian Ocean
Individual Storm Summary
Winds in knots, pressure in millibars, category is based on Saffir-Simpson scale.
| # | Name | Date | Wind | Pres | Cat | |
| 1 | Tropical Storm #1 | 29 SEP- 5 OCT | 45 | 991 | - | |
| 2 | Cyclone #2 | 8-22 NOV | 100 | 944 | 3 | |
| 3 | Cyclone #3 | 4-21 DEC | 65 | 976 | 1 | |
| 4 | Cyclone #4 | 6-17 DEC | 80 | 963 | 1 | |
| 5 | Cyclone #5 | 17-22 DEC | 65 | 976 | 1 | |
| 6 | Tropical Storm #6 | 23 DEC- 4 JAN | 55 | 984 | - | |
| 7 | Cyclone #7 | 29 DEC- 9 JAN | 140 | 898 | 5 | |
| 8 | Tropical Storm #8 | 1- 6 JAN | 35 | 997 | - | |
| 9 | Cyclone #9 | 25 JAN- 5 FEB | 65 | 976 | 1 | |
| 10 | Cyclone #10 | 26 JAN- 7 FEB | 125 | 916 | 4 | |
| 11 | Tropical Storm #11 | 28 JAN- 2 FEB | 45 | 991 | - | |
| 12 | Tropical Storm #12 | 10-12 FEB | 35 | 997 | - | |
| 13 | Cyclone #13 | 21-29 FEB | 105 | 938 | 3 | |
| 14 | Cyclone #14 | 26 FEB- 2 MAR | 110 | 933 | 3 | |
| 15 | Subtropical Storm #15 | 29 FEB- 2 MAR | 30 | 1000 | - | |
| 16 | Cyclone #16 | 1-11 MAR | 140 | 898 | 5 | |
| 17 | Cyclone #17 | 7-13 MAR | 65 | 976 | 1 | |
| 18 | Cyclone #18 | 15-27 MAR | 120 | 922 | 4 | |
| 19 | Tropical Storm #19 | 20-23 MAR | 35 | 997 | - | |
| 20 | Cyclone #20 | 21-28 MAR | 115 | 927 | 4 | |
| 21 | Subtropical Storm #21 | 23-28 MAR | 25 | 1002 | - | |
| 22 | Tropical Storm #22 | 7- 9 APR | 35 | 997 | - | |
| 23 | Cyclone #23 | 4-15 MAY | 65 | 976 | 1 |
Saffir-Simpson Scale
The chart color codes intensity (category based on Saffir-Simpson scale):
| Type | Category | Pressure (mb) | Winds (knots) |
Winds (mph) |
Line Color |
| Depression | td | ----- | < 34 | < 39 | Green |
| Tropical Storm | TS | ----- | 34-63 | 39-73 | Yellow |
| Hurricane | 1 | > 980 | 64-82 | 74-95 | Red |
| Hurricane | 2 | 965-980 | 83-95 | 96-110 | Light Red |
| Hurricane | 3 | 945-965 | 96-112 | 111-130 | Magenta |
| Hurricane | 4 | 920-945 | 113-135 | 131-155 | Light Magenta |
| Hurricane | 5 | < 920 | >135 | >155 | White |
NOTE: Pressures are in millibars and winds are in knots where one knot is equal to 1.15 mph
Individual Storm Details
![]() |
Cyclone #23 (04-15 MAY) Storm - Max Winds: 65 Min Pres: 976 Category: 1 |
![]() |
Tropical Storm #22 (07-09 APR) Storm - Max Winds: 35 Min Pres: 997 |
![]() |
Subtropical Storm #21 (23-28 MAR) Storm - Max Winds: 25 Min Pres: 1002 |
![]() |
Cyclone #20 (21-28 MAR) Storm - Max Winds: 115 Min Pres: 927 Category: 4 |
![]() |
Tropical Storm #19 (20-23 MAR) Storm - Max Winds: 35 Min Pres: 997 |
![]() |
Cyclone #18 (15-27 MAR) Storm - Max Winds: 120 Min Pres: 922 Category: 4 |
![]() |
Cyclone #17 (07-13 MAR) Storm - Max Winds: 65 Min Pres: 976 Category: 1 |
![]() |
Cyclone #16 (01-11 MAR) Storm - Max Winds: 140 Min Pres: 898 Category: 5 |
![]() |
Subtropical Storm #15 (29 FEB-02 MAR) Storm - Max Winds: 30 Min Pres: 1000 |
![]() |
Cyclone #14 (26 FEB-02 MAR) Storm - Max Winds: 110 Min Pres: 933 Category: 3 |
![]() |
Cyclone #13 (21-29 FEB) Storm - Max Winds: 105 Min Pres: 938 Category: 3 |
![]() |
Tropical Storm #12 (10-12 FEB) Storm - Max Winds: 35 Min Pres: 997 |
![]() |
Tropical Storm #11 (28 JAN-02 FEB) Storm - Max Winds: 45 Min Pres: 991 |
![]() |
Cyclone #10 (26 JAN-07 FEB) Storm - Max Winds: 125 Min Pres: 916 Category: 4 |
![]() |
Cyclone #9 (25 JAN-05 FEB) Storm - Max Winds: 65 Min Pres: 976 Category: 1 |
![]() |
Tropical Storm #8 (01-06 JAN) Storm - Max Winds: 35 Min Pres: 997 |
![]() |
Cyclone #7 (29 DEC-09 JAN) Storm - Max Winds: 140 Min Pres: 898 Category: 5 |
![]() |
Tropical Storm #6 (23 DEC-04 JAN) Storm - Max Winds: 55 Min Pres: 984 |
![]() |
Cyclone #5 (17-22 DEC) Storm - Max Winds: 65 Min Pres: 976 Category: 1 |
![]() |
Cyclone #4 (06-17 DEC) Storm - Max Winds: 80 Min Pres: 963 Category: 1 |
![]() |
Cyclone #3 (04-21 DEC) Storm - Max Winds: 65 Min Pres: 976 Category: 1 |
![]() |
Cyclone #2 (08-22 NOV) Storm - Max Winds: 100 Min Pres: 944 Category: 3 |
![]() |
Tropical Storm #1 (29 SEP-05 OCT) Storm - Max Winds: 45 Min Pres: 991 |























