Enter a ZIP code to get a forecast:
Setup Location

WRN Logo

1971 Hurricane/Tropical Data for Southern Indian Ocean

Track Map

Individual Storm Summary

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

#NameDateWindPresCat 
1Unknown Storm #1 5- 9 OCT - - - 
2Unknown Storm #2 5-13 NOV - - - 
3Unknown Storm #3 21-30 NOV - - - 
4Unknown Storm #4 14-28 DEC - - - 
5Unknown Storm #5 20-23 DEC - - - 
6Unknown Storm #6 30 DEC- 1 JAN - - - 
7Unknown Storm #7 30 DEC- 6 JAN - - - 
8Unknown Storm #8 17-31 JAN - - - 
9Unknown Storm #9 17 JAN- 5 FEB - - - 
10Unknown Storm #10 21-31 JAN - - - 
11Tropical Storm #11 23-30 JAN 45 - - 
12Cyclone #12 29 JAN- 6 FEB 70 - 1 
13Tropical Storm #13 1- 3 FEB 45 - - 
14Unknown Storm #14 3-12 FEB - - - 
15Tropical Storm #15 10-17 FEB 60 - - 
16Cyclone #16 11-16 FEB 65 - 1 
17Unknown Storm #17 12-15 FEB - - - 
18Tropical Storm #18 15-21 FEB 45 - - 
19Unknown Storm #19 15-22 FEB - - - 
20Unknown Storm #20 16-25 FEB - - - 
21Tropical Storm #21 16-28 FEB 50 - - 
22Unknown Storm #22 21-28 FEB - - - 
23Unknown Storm #23 10-17 MAR - - - 
24Tropical Storm #24 13-19 MAR 55 - - 
25Unknown Storm #25 15-24 MAR - - - 
26Tropical Storm #26 23-29 MAR 50 - - 

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

Track Tropical Storm #26 (23-29 MAR)
Storm - Max Winds: 50 TrackTracking information
Track Unknown Storm #25 (15-24 MAR)
Storm - TrackTracking information
Track Tropical Storm #24 (13-19 MAR)
Storm - Max Winds: 55 TrackTracking information
Track Unknown Storm #23 (10-17 MAR)
Storm - TrackTracking information
Track Unknown Storm #22 (21-28 FEB)
Storm - TrackTracking information
Track Tropical Storm #21 (16-28 FEB)
Storm - Max Winds: 50 TrackTracking information
Track Unknown Storm #20 (16-25 FEB)
Storm - TrackTracking information
Track Unknown Storm #19 (15-22 FEB)
Storm - TrackTracking information
Track Tropical Storm #18 (15-21 FEB)
Storm - Max Winds: 45 TrackTracking information
Track Unknown Storm #17 (12-15 FEB)
Storm - TrackTracking information
Track Cyclone #16 (11-16 FEB)
Storm - Max Winds: 65 Category: 1 TrackTracking information
Track Tropical Storm #15 (10-17 FEB)
Storm - Max Winds: 60 TrackTracking information
Track Unknown Storm #14 (03-12 FEB)
Storm - TrackTracking information
Track Tropical Storm #13 (01-03 FEB)
Storm - Max Winds: 45 TrackTracking information
Track Cyclone #12 (29 JAN-06 FEB)
Storm - Max Winds: 70 Category: 1 TrackTracking information
Track Tropical Storm #11 (23-30 JAN)
Storm - Max Winds: 45 TrackTracking information
Track Unknown Storm #10 (21-31 JAN)
Storm - TrackTracking information
Track Unknown Storm #9 (17 JAN-05 FEB)
Storm - TrackTracking information
Track Unknown Storm #8 (17-31 JAN)
Storm - TrackTracking information
Track Unknown Storm #7 (30 DEC-06 JAN)
Storm - TrackTracking information
Track Unknown Storm #6 (30 DEC-01 JAN)
Storm - TrackTracking information
Track Unknown Storm #5 (20-23 DEC)
Storm - TrackTracking information
Track Unknown Storm #4 (14-28 DEC)
Storm - TrackTracking information
Track Unknown Storm #3 (21-30 NOV)
Storm - TrackTracking information
Track Unknown Storm #2 (05-13 NOV)
Storm - TrackTracking information
Track Unknown Storm #1 (05-09 OCT)
Storm - TrackTracking information