iPhone App1991 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 | Subtropical Storm #1 | 19-25 SEP | 30 | - | - | |
| 2 | Subtropical Storm #2 | 15-20 OCT | 30 | - | - | |
| 3 | Cyclone #3 | 23-29 NOV | 125 | - | 4 | |
| 4 | Tropical Storm #4 | 29 NOV- 4 DEC | 55 | - | - | |
| 5 | Tropical Storm #5 | 8-12 DEC | 35 | - | - | |
| 6 | Cyclone #6 | 15-27 DEC | 90 | - | 2 | |
| 7 | Cyclone #7 | 9-18 JAN | 65 | - | 1 | |
| 8 | Cyclone #8 | 13 JAN- 4 FEB | 130 | - | 4 | |
| 9 | Tropical Storm #9 | 15-23 FEB | 50 | - | - | |
| 10 | Tropical Storm #10 | 16-18 FEB | 50 | - | - | |
| 11 | Tropical Storm #11 | 15-27 FEB | 60 | - | - | |
| 12 | Cyclone #12 | 23 FEB- 4 MAR | 90 | - | 2 | |
| 13 | Tropical Storm #13 | 24 FEB- 6 MAR | 55 | - | - | |
| 14 | Tropical Storm #14 | 26 FEB- 4 MAR | 60 | - | - | |
| 15 | Subtropical Storm #15 | 3- 7 MAR | 30 | - | - | |
| 16 | Subtropical Storm #16 | 14-21 MAR | 30 | - | - | |
| 17 | Cyclone #17 | 20 MAR- 2 APR | 90 | - | 2 | |
| 18 | Cyclone #18 | 24-31 MAR | 110 | - | 3 | |
| 19 | Cyclone #19 | 8-19 APR | 95 | - | 2 | |
| 20 | Tropical Storm #20 | 14-21 APR | 55 | - | - | |
| 21 | Cyclone #21 | 7-12 MAY | 80 | - | 1 | |
| 22 | Tropical Storm #22 | 6-13 JUN | 40 | - | - |
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
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Tropical Storm #22 (06-13 JUN) Storm - Max Winds: 40  Tracking information |
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Cyclone #21 (07-12 MAY) Storm - Max Winds: 80 Category: 1 Tracking information |
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Tropical Storm #20 (14-21 APR) Storm - Max Winds: 55 Tracking information |
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Cyclone #19 (08-19 APR) Storm - Max Winds: 95 Category: 2 Tracking information |
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Cyclone #18 (24-31 MAR) Storm - Max Winds: 110 Category: 3 Tracking information |
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Cyclone #17 (20 MAR-02 APR) Storm - Max Winds: 90 Category: 2 Tracking information |
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Subtropical Storm #16 (14-21 MAR) Storm - Max Winds: 30 Tracking information |
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Subtropical Storm #15 (03-07 MAR) Storm - Max Winds: 30 Tracking information |
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Tropical Storm #14 (26 FEB-04 MAR) Storm - Max Winds: 60 Tracking information |
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Tropical Storm #13 (24 FEB-06 MAR) Storm - Max Winds: 55 Tracking information |
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Cyclone #12 (23 FEB-04 MAR) Storm - Max Winds: 90 Category: 2 Tracking information |
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Tropical Storm #11 (15-27 FEB) Storm - Max Winds: 60 Tracking information |
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Tropical Storm #10 (16-18 FEB) Storm - Max Winds: 50 Tracking information |
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Tropical Storm #9 (15-23 FEB) Storm - Max Winds: 50 Tracking information |
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Cyclone #8 (13 JAN-04 FEB) Storm - Max Winds: 130 Category: 4 Tracking information |
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Cyclone #7 (09-18 JAN) Storm - Max Winds: 65 Category: 1 Tracking information |
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Cyclone #6 (15-27 DEC) Storm - Max Winds: 90 Category: 2 Tracking information |
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Tropical Storm #5 (08-12 DEC) Storm - Max Winds: 35 Tracking information |
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Tropical Storm #4 (29 NOV-04 DEC) Storm - Max Winds: 55 Tracking information |
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Cyclone #3 (23-29 NOV) Storm - Max Winds: 125 Category: 4 Tracking information |
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Subtropical Storm #2 (15-20 OCT) Storm - Max Winds: 30 Tracking information |
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Subtropical Storm #1 (19-25 SEP) Storm - Max Winds: 30 Tracking information |