1991 Hurricane/Tropical Data for Southern Indian Ocean

Individual Storm Summary

Winds in knots, pressure in millibars, category is based on Saffir-Simpson scale.

#NameDateWindPresCat 
1Storm #1 19-25 SEP 30 - - 
2Storm #2 15-20 OCT 30 - - 
3Cyclone #3 23-29 NOV 125 - 4 
4Tropical Storm #4 29 NOV- 4 DEC 55 - - 
5Tropical Storm #5 8-12 DEC 35 - - 
6Cyclone #6 15-27 DEC 90 - 2 
7Cyclone #7 9-18 JAN 65 - 1 
8Cyclone #8 13 JAN- 4 FEB 130 - 4 
9Tropical Storm #9 15-23 FEB 50 - - 
10Tropical Storm #10 16-18 FEB 50 - - 
11Tropical Storm #11 15-27 FEB 60 - - 
12Cyclone #12 23 FEB- 4 MAR 90 - 2 
13Tropical Storm #13 24 FEB- 6 MAR 55 - - 
14Tropical Storm #14 26 FEB- 4 MAR 60 - - 
15Storm #15 3- 7 MAR 30 - - 
16Storm #16 14-21 MAR 30 - - 
17Cyclone #17 20 MAR- 2 APR 90 - 2 
18Cyclone #18 24-31 MAR 110 - 3 
19Cyclone #19 8-19 APR 95 - 2 
20Tropical Storm #20 14-21 APR 55 - - 
21Cyclone #21 7-12 MAY 80 - 1 
22Tropical 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

Storm #1 (19-25 SEP)
Storm - Max Winds: 30

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Storm #2 (15-20 OCT)
Storm - Max Winds: 30

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Cyclone #3 (23-29 NOV)
Storm - Max Winds: 125 Category: 4

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Tropical Storm #4 (29 NOV-04 DEC)
Storm - Max Winds: 55

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Tropical Storm #5 (08-12 DEC)
Storm - Max Winds: 35

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Cyclone #6 (15-27 DEC)
Storm - Max Winds: 90 Category: 2

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Cyclone #7 (09-18 JAN)
Storm - Max Winds: 65 Category: 1

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Cyclone #8 (13 JAN-04 FEB)
Storm - Max Winds: 130 Category: 4

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Tropical Storm #9 (15-23 FEB)
Storm - Max Winds: 50

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Tropical Storm #10 (16-18 FEB)
Storm - Max Winds: 50

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Tropical Storm #11 (15-27 FEB)
Storm - Max Winds: 60

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Cyclone #12 (23 FEB-04 MAR)
Storm - Max Winds: 90 Category: 2

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Tropical Storm #13 (24 FEB-06 MAR)
Storm - Max Winds: 55

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Tropical Storm #14 (26 FEB-04 MAR)
Storm - Max Winds: 60

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Storm #15 (03-07 MAR)
Storm - Max Winds: 30

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Storm #16 (14-21 MAR)
Storm - Max Winds: 30

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Cyclone #17 (20 MAR-02 APR)
Storm - Max Winds: 90 Category: 2

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Cyclone #18 (24-31 MAR)
Storm - Max Winds: 110 Category: 3

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Cyclone #19 (08-19 APR)
Storm - Max Winds: 95 Category: 2

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Tropical Storm #20 (14-21 APR)
Storm - Max Winds: 55

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Cyclone #21 (07-12 MAY)
Storm - Max Winds: 80 Category: 1

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Tropical Storm #22 (06-13 JUN)
Storm - Max Winds: 40

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