Misplaced Pages

1970–71 South-West Indian Ocean cyclone season: Difference between revisions

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Browse history interactively← Previous editContent deleted Content addedVisualWikitext
Revision as of 22:42, 22 January 2023 editFleurDeOdile (talk | contribs)Extended confirmed users2,972 edits →Systems: MFR← Previous edit Latest revision as of 18:33, 27 April 2023 edit undoQwerfjkl (talk | contribs)Extended confirmed users, Page movers, Rollbackers212,880 editsm Updating colour scheme for season-related timelines. 
(4 intermediate revisions by 3 users not shown)
Line 1: Line 1:
{{short description|Cyclone season in the Southwest Indian Ocean}} {{short description|Cyclone season in the Southwest Indian Ocean}}
{{Infobox hurricane season {{Infobox tropical cyclone season
| Basin=SWI | Basin = SWI
| Year=1971 | Year = 1971
| Track=1970-1971 South-West Indian Ocean cyclone season summary.jpg | Track = 1970-1971 South-West Indian Ocean cyclone season summary.jpg
| First storm formed=16 September 1970 | First storm formed = 16 September 1970
| Last storm dissipated=21 March 1971 | Last storm dissipated = 21 March 1971
| Strongest storm name=Maggie-Muriel | Strongest storm name = Maggie-Muriel
| Strongest storm pressure=951 | Strongest storm pressure = 951
| Strongest storm winds=105 | Strongest storm winds = 105
| Average wind speed=10 | Average wind speed = 10
| Total disturbances=16 | Total disturbances = 16
| Total depressions=15 | Total depressions = 15
| Total storms=11 | Total storms = 15
| Total hurricanes=8 | Total hurricanes = 10
| Total intense=4 | Total intense = 4
| Total super=0 | Total super = 0
| Fatalities=32 | Fatalities = 32
| Damages= | Damages =
| five seasons=], ], '''1970–71''', ], ] | five seasons = ], ], '''1970–71''', ], ]
| Australian season=1970–71 Australian region cyclone season | Australian season = 1970–71 Australian region cyclone season
| South Pacific season=1970–71 South Pacific cyclone season | South Pacific season = 1970–71 South Pacific cyclone season
}} }}


Line 36: Line 36:
TimeAxis = orientation:horizontal TimeAxis = orientation:horizontal
ScaleMinor = grid:black unit:month increment:1 start:01/09/1970 ScaleMinor = grid:black unit:month increment:1 start:01/09/1970
Colors = Colors =
id:canvas value:gray(0.88) id:canvas value:gray(0.88)
id:GP value:red id:GP value:red
id:ZD value:rgb(0.5,0.8,1) legend:Zone_of_Disturbed_Weather/Tropical_Disturbance id:ZD value:rgb(0,0.52,0.84) legend:Zone_of_Disturbed_Weather/Tropical_Disturbance_=_≤31_mph_(≤50_km/h)
id:TD value:rgb(0.38,0.73,1) legend:Tropical_Depression id:TD value:rgb(0.43,0.76,0.92) legend:Tropical_Depression/Subtropical_Depression_=_32–38_mph_(51–62_km/h)
id:TS value:rgb(0,0.98,0.96) legend:Moderate_Tropical_Storm id:TS value:rgb(0.30,1,1) legend:Moderate_Tropical_Storm_=_39–54_mph_(63–88_km/h)
id:ST value:rgb(0.80,1,1) legend:Severe_Tropical_Storm id:ST value:rgb(0.75,1,0.75) legend:Severe_Tropical_Storm_=_55–73_mph_(89–118_km/h)
id:TC value:rgb(1,1,0.80) legend:Tropical_Cyclone id:TC value:rgb(1,0.85,0.55) legend:Tropical_Cyclone_=_74–103_mph_(119–166_km/h)
id:IT value:rgb(1,0.76,0.25) legend:Intense_Tropical_Cyclone id:IT value:rgb(1,0.45,0.54) legend:Intense_Tropical_Cyclone_=_104–133_mph_(167–214_km/h)
id:VI value:rgb(1,0.38,0.38) legend:Very_Intense_Tropical_Cyclone id:VI value:rgb(0.55,0.46,0.9) legend:Very_Intense_Tropical_Cyclone_=_≥134_mph_(≥215_km/h)


Backgroundcolors = canvas:canvas Backgroundcolors = canvas:canvas
Line 69: Line 69:
from:21/02/1971 till:03/03/1971 color:TC text:"Yvonne-Lise (TC)" from:21/02/1971 till:03/03/1971 color:TC text:"Yvonne-Lise (TC)"
from:07/03/1971 till:18/03/1971 color:IT text:"Maggie-Muriel (ITC)" from:07/03/1971 till:18/03/1971 color:IT text:"Maggie-Muriel (ITC)"
from:12/03/1971 till:22/03/1971 color:STtext:"Nelly (STS)" from:12/03/1971 till:22/03/1971 color:TC text:"Nelly (TC)"


bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas
Line 92: Line 92:
=== Tropical Disturbance Andree === === Tropical Disturbance Andree ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Andree 1970-09-19 0850Z.png | Image = Andree 1970-09-19 0850Z.png
|Track=Andree 1970 track.png | Track = Andree 1970 track.png
|Formed=September 16 | Formed = September 16
|Dissipated=September 19 | Dissipated = September 19
|Pressure= | Pressure =
|10-min winds=25 | 10-min winds = 25
|1-min winds=30 | 1-min winds = 30
}} }}
{{clear}} {{clear}}

=== Moderate Tropical Storm Betsy === === Moderate Tropical Storm Betsy ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Betsy 1970-10-06 0818Z.png | Image = Betsy 1970-10-06 0818Z.png
|Track=Betsy 1970 track.png | Track = Betsy 1970 track.png
|Formed=October 1 | Formed = October 1
|Dissipated=October 8 | Dissipated = October 8
|Pressure= | Pressure =
|10-min winds=35 | 10-min winds = 35
|1-min winds=35 | 1-min winds = 35
}} }}
{{clear}} {{clear}}

=== Moderate Tropical Storm Andrea–Claudine === === Moderate Tropical Storm Andrea–Claudine ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Andrea-Claudine 1970-11-04 0545Z.png | Image = Andrea-Claudine 1970-11-04 0545Z.png
|Track=Andrea-Claudine 1970 track.png | Track = Andrea-Claudine 1970 track.png
|Formed=November 10 <small>(Crossed 80°E)</small> | Formed = November 10 <small>(Crossed 80°E)</small>
|Dissipated=November 13 | Dissipated = November 13
|Pressure=970<!-- Pressure taken when winds were unknown--> | Pressure = 970<!-- Pressure taken when winds were unknown-->
|10-min winds=35 | 10-min winds = 35
|1-min winds=35 | 1-min winds = 35
}} }}
* Andrea-Claudine, 10 November to 13 November 1970 in central Indian Ocean * Andrea-Claudine, 10 November to 13 November 1970 in central Indian Ocean
Line 130: Line 132:
=== Intense Tropical Cyclone Hilary–Dominique === === Intense Tropical Cyclone Hilary–Dominique ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Hilary-Dominique 1970-12-19 0703Z.png | Image = Hilary-Dominique 1970-12-19 0703Z.png
|Track=Hilary-Dominique 1970 track.png | Track = Hilary-Dominique 1970 track.png
|Formed=December 12 | Formed = December 12
|Dissipated=December 28 | Dissipated = December 28
|Pressure= | Pressure =
|10-min winds=90 | 10-min winds = 90
|1-min winds=100 | 1-min winds = 100
}} }}
* Hilary, 11 to 18 December 1970 in central Indian Ocean * Hilary, 11 to 18 December 1970 in central Indian Ocean
Line 144: Line 146:
=== Moderate Tropical Storm Edith === === Moderate Tropical Storm Edith ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Edith 1971-01-18 0933Z.png | Image = Edith 1971-01-18 0933Z.png
|Track=SWI Edith 1971 track.png | Track = SWI Edith 1971 track.png
|Formed=January 5 | Formed = January 5
|Dissipated=January 10 | Dissipated = January 10
|Pressure= | Pressure =
|10-min winds=35 | 10-min winds = 35
|1-min winds=35 | 1-min winds = 35
}} }}
{{clear}} {{clear}}
Line 157: Line 159:
=== Tropical Cyclone Felicie === === Tropical Cyclone Felicie ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Felicie 1971-02-01 0904Z.png | Image = Felicie 1971-02-01 0904Z.png
|Track=Felicie 1971 track.png | Track = Felicie 1971 track.png
|Formed=January 17 | Formed = January 17
|Dissipated=February 6 | Dissipated = February 6
|Pressure= | Pressure =
|10-min winds=65 | 10-min winds = 65
|1-min winds=75 | 1-min winds = 75
}} }}
Cyclone Felicie was a slow moving cyclone that made a large number of landfalls in Madagascar, 4, in addition to a single landfall in Mozambique, which reportedly killed 30 people. The storm followed a very erratic track due to unusual steering patterns, and went through many cycles of strengthening and weakening as it slowly trudged to the south. Felicie reached Tropical Cyclone status three separate times, before finally becoming extratropical southwest of Madagascar.<ref>{{cite report|series=Global tropical/extratropical cyclone climatic atlas|title=Tropical Storm Felice, 17 January- 5 February|year=1996|work=National Climatic Data Center|access-date=February 11, 2019|url={{GTECCA url|basin=SWI|year=1971_2}}}}</ref> Cyclone Felicie was a slow moving cyclone that made a large number of landfalls in Madagascar, 4, in addition to a single landfall in Mozambique, which reportedly killed 30 people. The storm followed a very erratic track due to unusual steering patterns, and went through many cycles of strengthening and weakening as it slowly trudged to the south. Felicie reached Tropical Cyclone status three separate times, before finally becoming extratropical southwest of Madagascar.<ref>{{cite report|series=Global tropical/extratropical cyclone climatic atlas|title=Tropical Storm Felice, 17 January- 5 February|year=1996|work=National Climatic Data Center|access-date=February 11, 2019|url={{GTECCA url|basin=SWI|year=1971_2}}}}</ref>
Line 171: Line 173:
=== Tropical Cyclone Myrtle–Ginette === === Tropical Cyclone Myrtle–Ginette ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Myrtle-Ginette 1971-01-21 0645Z.png | Image = Myrtle-Ginette 1971-01-21 0645Z.png
|Track=Myrtle-Ginette 1971 track.png | Track = Myrtle-Ginette 1971 track.png
|Formed=January 15 | Formed = January 15
|Dissipated=January 31 | Dissipated = January 31
|Pressure= | Pressure =
|10-min winds=80 | 10-min winds = 80
|1-min winds=90 | 1-min winds = 90
}} }}
On January 19, Severe Tropical Cyclone Myrtle entered the South-West Indian Ocean; therefore, it was assigned a second name, Ginette. The next day, Ginette reached hurricane status and developed a clear eye as it traveled generally west-southwestward. On January 22, Ginette curved southwestward and came within 72 kilometers (45 miles) of the island of Rodrigues. On Rodrigues, winds as high as 150 km/h (93 mph) were recorded along with a minimum barometric pressure of 989 mbar (29.21 inHg). Throughout the next two days, Ginette approached the island of Reunion, causing stormy weather that lasted until January 29. In Reunion, swells associated with Ginette reached 6 meters (20 feet) at times. On January 25, Ginette became stationary while located south of Reunion. The next day, Ginette encountered a ridge which caused it to execute a small clockwise loop. After completing the loop, Ginette accelerated southeastward and gradually weakened. By January 31, Ginette had transitioned into an extratropical cyclone.<ref>{{cite report|url={{GTECCA url|basin=SWI|year=1971_1}}|title=Hurricane Ginette, 17-31 January|access-date=February 12, 2019|series=Global tropical/extratropical cyclone climatic atlas|year=1996|work=National Climatic Data Center}}</ref> On January 19, Severe Tropical Cyclone Myrtle entered the South-West Indian Ocean; therefore, it was assigned a second name, Ginette. The next day, Ginette reached hurricane status and developed a clear eye as it traveled generally west-southwestward. On January 22, Ginette curved southwestward and came within {{convert|72|km|mi|abbr=off|sp=us}} of the island of Rodrigues. On Rodrigues, winds as high as {{convert|150|km/h|mph|abbr=on}} were recorded along with a minimum barometric pressure of {{convert|989|mbar|inHg|abbr=on}}. Throughout the next two days, Ginette approached the island of Reunion, causing stormy weather that lasted until January 29. In Reunion, swells associated with Ginette reached {{convert|6|m|ft|abbr=off|sp=us}} at times. On January 25, Ginette became stationary while located south of Reunion. The next day, Ginette encountered a ridge which caused it to execute a small clockwise loop. After completing the loop, Ginette accelerated southeastward and gradually weakened. By January 31, Ginette had transitioned into an extratropical cyclone.<ref>{{cite report|url={{GTECCA url|basin=SWI|year=1971_1}}|title=Hurricane Ginette, 17–31 January|access-date=February 12, 2019|series=Global tropical/extratropical cyclone climatic atlas|year=1996|work=National Climatic Data Center}}</ref>
{{clear}} {{clear}}


=== Tropical Cyclone Helga === === Tropical Cyclone Helga ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Helga 1971-02-07 0803Z.png | Image = Helga 1971-02-07 0803Z.png
|Track=Helga 1971 track.png | Track = Helga 1971 track.png
|Formed=February 2 | Formed = February 2
|Dissipated=February 15 | Dissipated = February 15
|Pressure= | Pressure =
|10-min winds=80 | 10-min winds = 80
|1-min winds=90 | 1-min winds = 90
}} }}
On February 8, Helga passed southeast of Réunion and Mauritius, bringing heavy rainfall to the former island, reaching {{convert|926|mm|in|abbr=on}} at Commerson. Two people died on the island due to drowning.<ref>{{cite report|series=Global tropical/extratropical cyclone climatic atlas|title=Hurricane Helga, 3-12 February|year=1996|work=National Climatic Data Center|access-date=February 11, 2019|url={{GTECCA url|basin=SWI|year=1971_4}}}}</ref> On February 8, Helga passed southeast of Réunion and Mauritius, bringing heavy rainfall to the former island, reaching {{convert|926|mm|in|abbr=on}} at Commerson. Two people died on the island due to drowning.<ref>{{cite report|series=Global tropical/extratropical cyclone climatic atlas|title=Hurricane Helga, 3–12 February|year=1996|work=National Climatic Data Center|access-date=February 11, 2019|url={{GTECCA url|basin=SWI|year=1971_4}}}}</ref>
{{clear}} {{clear}}


=== Tropical Cyclone Tilly-Iphigenie === === Tropical Cyclone Tilly-Iphigenie ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Track=Tilly-Iphigenie 1971 track.png | Track = Tilly-Iphigenie 1971 track.png
|Formed=February 14 (entered basin) | Formed = February 14 (entered basin)
|Dissipated=February 17 | Dissipated = February 17
|Pressure=970 | Pressure = 970
|10-min winds=65 | 10-min winds = 65
|1-min winds=65 | 1-min winds = 65
}} }}
{{clear}} {{clear}}
Line 211: Line 213:
=== Tropical Cyclone Joelle === === Tropical Cyclone Joelle ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Joelle 1971-02-17 0917Z.png | Image = Joelle 1971-02-17 0917Z.png
|Track=Joelle 1971 track.png | Track = Joelle 1971 track.png
|Formed=February 15 | Formed = February 15
|Dissipated=February 25 | Dissipated = February 25
|Pressure= | Pressure =
|10-min winds=65 | 10-min winds = 65
|1-min winds=65 | 1-min winds = 65
}} }}
{{clear}} {{clear}}

=== Tropical Cyclone Kalinka === === Tropical Cyclone Kalinka ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Kalinka 1971-02-20 0700Z.png | Image = Kalinka 1971-02-20 0700Z.png
|Track=Kalinka 1971 track.png | Track = Kalinka 1971 track.png
|Formed=February 16 | Formed = February 16
|Dissipated=February 26 | Dissipated = February 26
|Pressure= | Pressure =
|10-min winds=75 | 10-min winds = 75
|1-min winds=85 | 1-min winds = 85
}} }}
{{clear}} {{clear}}

=== Tropical Cyclone Yvonne–Lise === === Tropical Cyclone Yvonne–Lise ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Yvonne-Lise 1971-02-26 0746Z.png | Image = Yvonne-Lise 1971-02-26 0746Z.png
|Track=Yvonne-Lise 1971 track.png | Track = Yvonne-Lise 1971 track.png
|Formed=February 21 | Formed = February 21
|Dissipated=March 3 | Dissipated = March 3
|Pressure= | Pressure =
|10-min winds=70 | 10-min winds = 70
|1-min winds=80 | 1-min winds = 80
}} }}
{{clear}} {{clear}}

=== Intense Tropical Cyclone Maggie–Muriel === === Intense Tropical Cyclone Maggie–Muriel ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Maggie-Muriel 1971-03-15 0714Z.png | Image = Maggie-Muriel 1971-03-15 0714Z.png
|Track=Maggie-Muriel 1971 track.png | Track = Maggie-Muriel 1971 track.png
|Formed=March 7 | Formed = March 7
|Dissipated=March 18 | Dissipated = March 18
|Pressure=951 | Pressure = 951
|10-min winds=90 | 10-min winds = 90
|1-min winds=100 | 1-min winds = 100
}} }}
* Maggie/Muriel, 7 to 20 March 1971 in central Indian Ocean * Maggie/Muriel, 7 to 20 March 1971 in central Indian Ocean
{{clear}} {{clear}}

=== Tropical Cyclone Nelly === === Tropical Cyclone Nelly ===
{{Infobox Hurricane Small {{Infobox Hurricane Small
|Basin=SWI | Basin = SWI
|Image=Nelly 1971-03-17 0917Z.png | Image = Nelly 1971-03-17 0917Z.png
|Track=Nelly 1971 track.png | Track = Nelly 1971 track.png
|Formed=March 12 | Formed = March 12
|Dissipated=March 22 | Dissipated = March 22
|Pressure= | Pressure =
|10-min winds=65 | 10-min winds = 65
|1-min winds=75 | 1-min winds = 75
}} }}
{{clear}} {{clear}}
Line 283: Line 289:


{{TC Decades|Year=1970|basin=South-West Indian Ocean|type=cyclone|shem=yes}} {{TC Decades|Year=1970|basin=South-West Indian Ocean|type=cyclone|shem=yes}}
{{Tropical cyclone season|1970|split-year=y}}


{{DEFAULTSORT:1970-1975 Southern Hemisphere tropical cyclone seasons}} {{DEFAULTSORT:1970-1975 Southern Hemisphere tropical cyclone seasons}}

Latest revision as of 18:33, 27 April 2023

Cyclone season in the Southwest Indian Ocean
1970–71 South-West Indian Ocean cyclone season
Season summary map
Seasonal boundaries
First system formed16 September 1970
Last system dissipated21 March 1971
Strongest storm
NameMaggie-Muriel
 • Maximum winds195 km/h (120 mph)
(10-minute sustained)
 • Lowest pressure951 hPa (mbar)
Seasonal statistics
Total disturbances16
Total depressions15
Total storms15
Tropical cyclones10
Intense tropical cyclones4
Very intense tropical cyclones0
Total fatalities32
Total damageUnknown
Related articles
South-West Indian Ocean tropical cyclone seasons
1968–69, 1969–70, 1970–71, 1971–72, 1972–73

The 1970–71 South-West Indian Ocean cyclone season was an above-average cyclone season. The season officially ran from November 1, 1970, to April 30, 1971.

Systems

Tropical cyclone scales#Comparisons across basins

Tropical Disturbance Andree

Tropical disturbance (MFR)
Tropical depression (SSHWS)
 
DurationSeptember 16 – September 19
Peak intensity45 km/h (30 mph) (10-min);

Moderate Tropical Storm Betsy

Moderate tropical storm (MFR)
Tropical storm (SSHWS)
 
DurationOctober 1 – October 8
Peak intensity65 km/h (40 mph) (10-min);

Moderate Tropical Storm Andrea–Claudine

Moderate tropical storm (MFR)
Tropical storm (SSHWS)
 
DurationNovember 10 (Crossed 80°E) – November 13
Peak intensity65 km/h (40 mph) (10-min);
970 hPa (mbar)
  • Andrea-Claudine, 10 November to 13 November 1970 in central Indian Ocean

Intense Tropical Cyclone Hilary–Dominique

Intense tropical cyclone (MFR)
Category 3 tropical cyclone (SSHWS)
 
DurationDecember 12 – December 28
Peak intensity165 km/h (105 mph) (10-min);
  • Hilary, 11 to 18 December 1970 in central Indian Ocean

Moderate Tropical Storm Edith

Moderate tropical storm (MFR)
Tropical storm (SSHWS)
 
DurationJanuary 5 – January 10
Peak intensity65 km/h (40 mph) (10-min);

Tropical Cyclone Felicie

Tropical cyclone (MFR)
Category 1 tropical cyclone (SSHWS)
 
DurationJanuary 17 – February 6
Peak intensity120 km/h (75 mph) (10-min);

Cyclone Felicie was a slow moving cyclone that made a large number of landfalls in Madagascar, 4, in addition to a single landfall in Mozambique, which reportedly killed 30 people. The storm followed a very erratic track due to unusual steering patterns, and went through many cycles of strengthening and weakening as it slowly trudged to the south. Felicie reached Tropical Cyclone status three separate times, before finally becoming extratropical southwest of Madagascar.

Tropical Cyclone Myrtle–Ginette

Tropical cyclone (MFR)
Category 2 tropical cyclone (SSHWS)
 
DurationJanuary 15 – January 31
Peak intensity150 km/h (90 mph) (10-min);

On January 19, Severe Tropical Cyclone Myrtle entered the South-West Indian Ocean; therefore, it was assigned a second name, Ginette. The next day, Ginette reached hurricane status and developed a clear eye as it traveled generally west-southwestward. On January 22, Ginette curved southwestward and came within 72 kilometers (45 miles) of the island of Rodrigues. On Rodrigues, winds as high as 150 km/h (93 mph) were recorded along with a minimum barometric pressure of 989 mbar (29.2 inHg). Throughout the next two days, Ginette approached the island of Reunion, causing stormy weather that lasted until January 29. In Reunion, swells associated with Ginette reached 6 meters (20 feet) at times. On January 25, Ginette became stationary while located south of Reunion. The next day, Ginette encountered a ridge which caused it to execute a small clockwise loop. After completing the loop, Ginette accelerated southeastward and gradually weakened. By January 31, Ginette had transitioned into an extratropical cyclone.

Tropical Cyclone Helga

Tropical cyclone (MFR)
Category 2 tropical cyclone (SSHWS)
 
DurationFebruary 2 – February 15
Peak intensity150 km/h (90 mph) (10-min);

On February 8, Helga passed southeast of Réunion and Mauritius, bringing heavy rainfall to the former island, reaching 926 mm (36.5 in) at Commerson. Two people died on the island due to drowning.

Tropical Cyclone Tilly-Iphigenie

Tropical cyclone (MFR)
Category 1 tropical cyclone (SSHWS)
 
DurationFebruary 14 (entered basin) – February 17
Peak intensity120 km/h (75 mph) (10-min);
970 hPa (mbar)

Tropical Cyclone Joelle

Tropical cyclone (MFR)
Category 1 tropical cyclone (SSHWS)
 
DurationFebruary 15 – February 25
Peak intensity120 km/h (75 mph) (10-min);

Tropical Cyclone Kalinka

Tropical cyclone (MFR)
Category 2 tropical cyclone (SSHWS)
 
DurationFebruary 16 – February 26
Peak intensity140 km/h (85 mph) (10-min);

Tropical Cyclone Yvonne–Lise

Tropical cyclone (MFR)
Category 1 tropical cyclone (SSHWS)
 
DurationFebruary 21 – March 3
Peak intensity130 km/h (80 mph) (10-min);

Intense Tropical Cyclone Maggie–Muriel

Intense tropical cyclone (MFR)
Category 3 tropical cyclone (SSHWS)
 
DurationMarch 7 – March 18
Peak intensity165 km/h (105 mph) (10-min);
951 hPa (mbar)
  • Maggie/Muriel, 7 to 20 March 1971 in central Indian Ocean

Tropical Cyclone Nelly

Tropical cyclone (MFR)
Category 1 tropical cyclone (SSHWS)
 
DurationMarch 12 – March 22
Peak intensity120 km/h (75 mph) (10-min);

See also

  • Atlantic hurricane seasons: 1970, 1971
  • Eastern Pacific hurricane seasons: 1970, 1971
  • Western Pacific typhoon seasons: 1970, 1971
  • North Indian Ocean cyclone seasons: 1970, 1971

References

  1. Tropical Storm Felice, 17 January- 5 February. National Climatic Data Center (Report). Global tropical/extratropical cyclone climatic atlas. 1996. Retrieved February 11, 2019.
  2. Hurricane Ginette, 17–31 January. National Climatic Data Center (Report). Global tropical/extratropical cyclone climatic atlas. 1996. Retrieved February 12, 2019.
  3. Hurricane Helga, 3–12 February. National Climatic Data Center (Report). Global tropical/extratropical cyclone climatic atlas. 1996. Retrieved February 11, 2019.
1970–1979 South-West Indian Ocean cyclone seasons
Tropical cyclones in 1970 and 1971
Cyclones
Hurricanes
Typhoons
Non-seasonal lists
Categories: