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2011 Pacific typhoon season

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2010-11 South-West Indian Ocean cyclone season

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Jtwc bta/sandbox
 
Season summary map
Seasonal boundaries
First system formed26 October 2010 (01)
Last system dissipated19 March 2011 (Cherono)
Strongest storm
NameBingiza
 • Maximum winds185 km/h (115 mph)
(1-minute sustained)
 • Lowest pressure948 hPa (mbar)
Seasonal statistics
Total depressions1
Total storms1
Tropical cyclones2
Total fatalitiesUnknown
Total damageUnknown
Related articles
South-West Indian Ocean tropical cyclone seasons
2008–09, 2009–10, 2010–11 2011–12

Tropical Cyclone 01S

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Tropical storm (SSHWS)
Duration26 October – 28 October
Peak intensity65 km/h (40 mph) (1-min);
996 hPa (mbar)

On 25 October, RSMC La Reunion reported that a tropical disturbance has formed in the South Western Indian Ocean, and gave it the identifier "01".[1] On the same day, the Joint Typhoon Warning Center (JTWC) identified the tropical disturbance as a low pressure area, located at approximately 800 nautical miles (1,500 km; 920 mi) east of Diego Garcia. On 26 October, the MFR upgraded the disturbance into a tropical depression.[2] Later that day, the JTWC upgraded the low pressure area directly into a tropical storm.[3] On 27 October, the MFR reported that the system slightly weakened.[4] Later that day, the MFR reported that the system further weakened into a Tropical Disturbance.[5] Late on the same day, the JTWC has also reported that the storm weakened into a lower end Tropical Depression issuing their final warning on the system.[6] Despite its weakness, the system had very good convection and showed a few signs of re-intensifying.[7] However, on 29 October, the convection in the system started depleting and the disturbance continued to weaken.[8] Later, the MFR issued their final advisory on the disturbance.[9] The remnants of the system persisted as they slowly moved west, until it dissipated completely on 1 November, just south of the Arabian Sea.

Tropical Cyclone Abele (03S)

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Category 1 tropical cyclone (SSHWS)
Duration29 November – 3 December
Peak intensity150 km/h (90 mph) (1-min);
963 hPa (mbar)

On 29 November, both the TCWC Perth and the Météo-France (MFR) reported that a tropical distrubance had formed within the South-West Indian Ocean, and gave it the identifier "02".[10] Later that day, the Joint Typhoon Warning Center (JTWC) classified it as Tropical Cyclone 03S, locating it 700 nautical miles (1,300 km; 810 mi) west of Cocos Island.[11] On 30 November, the MFR upgraded the disturbance into a tropical depression.[12] On 1 December it was named Abele by the Mauritius Meteorological Service as it became the first tropical storm of the season.[13] On the very same day, the MFR reported that Abele intensified into a severe tropical storm.[14] On 2 December, the MFR reported that Abele continued to intensify and became a tropical cyclone.[15] It was given a Category 1 Tropical cyclone status by the JTWC.[16] On 3 December, both the JTWC and MFR reported that Abele crossed 90°E and moved into the Australian region.[17][18]

Tropical Cyclone Bingiza (13S)

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Category 3 tropical cyclone (SSHWS)
Duration9 February – 17 February
Peak intensity185 km/h (115 mph) (1-min);
948 hPa (mbar)
Main article: Cyclone Bingiza

Early on 9 February, the Météo-France (MFR) upgraded an area of low pressure into a Tropical Disturbance and designated it with '05'.[19] At the time it was reported to be 140 nm (260 km) north-northeast of Tromelin Island.[20] A few hours later, the MFR upgraded the disturbance into a tropical depression.[21] The depression continued to intensify rapidly and on the same day, it became a Moderate Tropical Storm.[22] Soon afterwards, the Joint Typhoon Warning Center (JTWC) started monitoring the system as Tropical Cyclone 13S.[23] However, on 11 February, the central pressure started increasing and the system gradually weakened.[24] On the next day, environmental conditions became very favourable for rapid strengthening, with no upper level wind shear and very good upper level divergence. The nearly-stationary system started intensifying again and became a Severe Tropical Storm,[25] and soon a Tropical Cyclone,[26] and then into an Intense Tropical Cyclone.[27] But, due to interaction with land mass, Bingiza weakened into a Tropical cyclone, late on 13 February.[28] Early on the next day, Bingiza made landfall over Saranambana, Madagascar and started weakening rapidly.[29] As a result, the MFR downgraded it into an Overland Depression.[30] The system slowly moved over Madagascar and crossed into the Mozambique Channel on 16 February, with the MFR reporting that the system became a Tropical Disturbance.[31] As it entered water, it started intensifying and soon became a Tropical Depression.[32] It briefly attained Moderate Tropical Storm status before making landfall and weakening to Tropical Depression strength. Bingiza later rapidly weakened as it crossed southern Madagascar, and dissipated on 20 February in the southern Indian Ocean.

As Bingiza neared land, rain and thundershowers hit Madagascar,[33] causing flooding.

Tropical Cyclone Cherono (18S)

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Tropical storm (SSHWS)
Duration17 March – 19 March
Peak intensity85 km/h (50 mph) (1-min);
989 hPa (mbar)

On 14 March, Tropical Low 23U crossed from the Australian region into the South West Indian Ocean basin, and was classified as Tropical Disturbance 07. It quickly strengthened the next day into a Tropical Depression, before being upgraded to Moderate Tropical Storm strength and being named Cherono. By 19 March, it was reported to be weakening and on 23 March Cherono dissipated.

2010-11 Australian region cyclone season

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Jtwc bta/sandbox
 
Season summary map
Seasonal boundaries
First system formed28 October 2010
Last system dissipated10 April 2011
Strongest storm
NameYasi
 • Maximum winds205 km/h (125 mph)
(10-minute sustained)
 • Lowest pressure929 hPa (mbar)
Seasonal statistics
Tropical lows28
Tropical cyclones11
Severe tropical cyclones5
Total fatalities3 total
Total damage$3.64 billion (2011 USD)
Related articles
Australian region tropical cyclone seasons
2008–09, 2009–10, 2010–11, 2011–12, 2012–13

Tropical Cyclone Anggrek (02S)

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Tropical storm (SSHWS)
  
DurationOctober 29 – November 6
Peak intensity100 km/h (65 mph) (1-min);
982 hPa (mbar)

Tropical Cyclone Tasha (04P)

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Tropical storm (SSHWS)
  
DurationDecember 23 – December 26
Peak intensity75 km/h (45 mph) (1-min);
993 hPa (mbar)

Tropical Cyclone Vania (06P)

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Tropical storm (SSHWS)
  
DurationJanuary 10 – January 16
Peak intensity85 km/h (50 mph) (1-min);
989 hPa (mbar)

Tropical Cyclone Zelia (04P)

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Category 2 tropical cyclone (SSHWS)
  
DurationJanuary 12 – January 18
Peak intensity175 km/h (110 mph) (1-min);
952 hPa (mbar)

Tropical Cyclone Anthony (09P)

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Tropical storm (SSHWS)
  
DurationJanuary 22 – January 31
Peak intensity100 km/h (65 mph) (1-min);
982 hPa (mbar)

Tropical Cyclone Bianca (10S)

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Category 2 tropical cyclone (SSHWS)
  
DurationJanuary 24 – January 30
Peak intensity175 km/h (110 mph) (1-min);
952 hPa (mbar)

Tropical Cyclone 14S

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Tropical storm (SSHWS)
  
DurationFebruary 9 – February 13
Peak intensity65 km/h (40 mph) (1-min);
996 hPa (mbar)

Tropical Cyclone Carlos (15S)

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Category 1 tropical cyclone (SSHWS)
  
DurationFebruary 14 – January 26
Peak intensity120 km/h (75 mph) (1-min);
974 hPa (mbar)

Tropical Cyclone Dianne (16S)

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Category 1 tropical cyclone (SSHWS)
  
DurationFebruary 14 – February 22
Peak intensity150 km/h (90 mph) (1-min);
963 hPa (mbar)

A low developed off the Western Australian coast on 11 February and strengthened on 15 February. The Bureau of Meteorology issued a Cyclone watch later in the day reported that a tropical low formed 350 km (220 miles) NNW of Exmouth.[34] A Cyclone watch had been issue for the coastal communities between Onslow to Coral Bay.[34] Late on 16 February, the low formed into Tropical Cyclone Dianne whilst 445 km NW of Exmouth.[35] Dianne, as expected, intensified, and was upgraded to a Category 2 cyclone on 18 February whilst slowly moving towards the SSW.[36] On 19 February the system intensified into a Category 3 severe tropical cyclone.[37] By late 21 February the system lost its strength as it moved into colder waters and was downgraded to a Category 1 Tropical Cyclone,[38] and by 22 February it was classified as an ex-Tropical low.[39]

Tropical Cyclone 20S

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Tropical storm (SSHWS)
  
DurationMarch 30 – April 4
Peak intensity65 km/h (40 mph) (1-min);
996 hPa (mbar)

Tropical Cyclone Errol (21S)

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Category 1 tropical cyclone (SSHWS)
  
DurationApril 13 – April 18
Peak intensity125 km/h (80 mph) (1-min);
982 hPa (mbar)

2010-11 South Pacific cyclone season

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Jtwc bta/sandbox
 
Season summary map
Seasonal boundaries
First system formedJanuary 11, 2011
Last system dissipatedMarch 29, 2011
Strongest storm
NameYasi
 • Maximum winds250 km/h (155 mph)
(1-minute sustained)
 • Lowest pressure965 hPa (mbar)
Seasonal statistics
Total depressions0
Tropical cyclones2
Total fatalitiesUnknown
Total damageUnknown
Related articles
South Pacific tropical cyclone seasons
2008-09, 2009-10, 2010–11, 2011-12, 2012-13

Tropical Cyclone Vania (05P)

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Tropical storm (SSHWS)
  
DurationJanuary 11 – January 15
Peak intensity100 km/h (65 mph) (1-min);
993 hPa (mbar)

Tropical Cyclone Wilma (08P)

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Category 4 tropical cyclone (SSHWS)
  
DurationJanuary 20 – January 28
Peak intensity215 km/h (130 mph) (1-min);
937 hPa (mbar)

Tropical Cyclone Yasi (11P)

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Category 4 tropical cyclone (SSHWS)
  
DurationJanuary 29 – February 6
Peak intensity250 km/h (155 mph) (1-min);
922 hPa (mbar)
Main article: Cyclone Yasi

Early on January 26, RSMC Nadi reported that Tropical Disturbance 09F, had developed within a surface trough, about 830 km (520 mi), to the northeast of Nadi, Fiji.[40] During that day, the disturbance gradually organized further, before RSMC Nadi reported early the next day, that it had developed into a tropical depression.[41] Over the next couple of days, the depression drifted towards the west, while gradually intensifying and organizing further.[42] Late on January 29, the JTWC issued a tropical cyclone formation alert on the developing tropical depression, before designating it as 11P and initiating advisories on the system.[43][44] Early the next day, RSMC Nadi reported that the depression had intensified into a category one tropical cyclone and named it Yasi, while it was located about 510 km (320 mi) to the northeast of Port Vila in Vanuatu.[42][45] Yasi continued to intensify throughout that day, while affecting the Solomon Islands and Vanuatu.[42] Early on January 31, RSMC Nadi reported that Yasi had intensified into a category two tropical cyclone, before reporting that it had become a severe tropical cyclone.[46][47] During that afternoon, both the JTWC and RSMC Nadi reported that the system had moved across 160°E and had moved out of the South Pacific Basin and into the Australian region[48][49], where it became a much stronger storm before striking Queensland during the first days of February.

Tropical Cyclone Zaka (12P)

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Tropical storm (SSHWS)
  
DurationFebruary 3 – February 8
Peak intensity85 km/h (50 mph) (1-min);
989 hPa (mbar)

Tropical Cyclone Atu (17P)

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Category 4 tropical cyclone (SSHWS)
  
DurationFebruary 17 – February 25
Peak intensity215 km/h (130 mph) (1-min);
937 hPa (mbar)

Tropical Cyclone Bune (19P)

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Category 1 tropical cyclone (SSHWS)
  
DurationMarch 22 – March 29
Peak intensity140 km/h (85 mph) (1-min);
967 hPa (mbar)

2011-12 South-West Indian Ocean cyclone season

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2011-12 Australian region cyclone season

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2011-12 South Pacific cyclone season

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  1. ^ "Meteo France Tropical Cyclone Advisory 01 for Tropical Disturbance 01". Météo-France. Retrieved 26 October 2010.
  2. ^ "Meteo France Technical Bulletin 03 for Tropical Depression 01". Météo-France. Retrieved 26 October 2010.
  3. ^ "JTWC Tropical Cyclone 01S Warning 01". Joint Typhoon Warning Center. Retrieved 26 October 2010.
  4. ^ "Meteo France Technical Bulletin 09 for Tropical Depression 01". Météo-France. Retrieved 27 October 2010.
  5. ^ "Meteo France Technical Bulletin 10 for Tropical Depression 01". Météo-France. Retrieved 27 October 2010.
  6. ^ "JTWC Tropical Cyclone 01S Warning 05". Joint Typhoon Warning Center. Retrieved 27 October 2010.
  7. ^ "FNMOC (Image) – Tropical Cyclone 01S having good convection even after weakening into a Tropical Depression". Fleet Numerical Meteorology and Oceanography Center. Retrieved 28 October 2010.
  8. ^ "Tropical Cyclone 01S running out of convection". Fleet Numerical Meteorology and Oceanography Center. Retrieved 29 October 2010.
  9. ^ "Meteo France Technical Bulletin 15 for Tropical Depression 01". Météo-France. Retrieved 29 October 2010.
  10. ^ "Meteo France Tropical Cyclone Advisory 01 for Tropical Disturbance 02". Météo-France. Retrieved 29 November 2010.
  11. ^ "JTWC Tropical Cyclone 03S Warning 01". Joint Typhoon Warning Center. Retrieved 29 November 2010.
  12. ^ "Meteo France Technical Bulletin 04 for Tropical Depression 02". Météo-France. Retrieved 29 November 2010.
  13. ^ "Meteo France Technical Bulletin 09 for Tropical Storm Abele". Météo-France. Retrieved 1 December 2010.
  14. ^ "Meteo France Technical Bulletin 10 for Tropical Storm Abele". Météo-France. Retrieved 1 December 2010.
  15. ^ "Meteo France Technical Bulletin 13 for Tropical Cyclone Abele". Météo-France. Retrieved 2 December 2010.
  16. ^ "JTWC Tropical Cyclone 03S Warning 08". Joint Typhoon Warning Center. Retrieved 3 December 2010.
  17. ^ "JTWC Tropical Cyclone 03S Warning 09". Joint Typhoon Warning Center. Retrieved 3 December 2010.
  18. ^ "Meteo France Technical Bulletin 15 for Tropical Cyclone Abele". Météo-France. Retrieved 3 December 2010.
  19. ^ "Tropical Cyclone Technical Bulletin 1 for Tropical Disturbance 05". Météo-France. Retrieved 9 February 2011.
  20. ^ "Tropical Weather Discussion". Météo-France. 9 February 2011. Retrieved 9 February 2011.
  21. ^ "Tropical Cyclone Technical Bulletin 2 for Tropical Disturbance 05". Météo-France. Retrieved 9 February 2011.
  22. ^ "Tropical Cyclone Technical Bulletin 3 for Moderate Tropical Storm Bingiza". Météo-France. Retrieved 9 February 2011.
  23. ^ "JTWC Tropical Cyclone 13S Warning 01". Joint Typhoon Warning Center. Retrieved 10 February 2011.
  24. ^ "Tropical Cyclone Technical Bulletin 10 for Moderate Tropical Storm Bingiza". Météo-France. Retrieved 11 February 2011.
  25. ^ "Tropical Cyclone Technical Bulletin 13 for Severe Tropical Storm Bingiza". Météo-France. Retrieved 12 February 2011.
  26. ^ "Tropical Cyclone Technical Bulletin 15 for Tropical Cyclone Bingiza". Météo-France. Retrieved 12 February 2011.
  27. ^ "Tropical Cyclone Technical Bulletin 16 for Intense Tropical Cyclone Bingiza". Météo-France. Retrieved 13 February 2011.
  28. ^ "Tropical Cyclone Technical Bulletin 19 for Intense Tropical Cyclone Bingiza". Météo-France. Retrieved 14 February 2011.
  29. ^ "JTWC Tropical Cyclone 13S Warning 10". Joint Typhoon Warning Center. Retrieved 14 February 2011.
  30. ^ "Tropical Cyclone Technical Bulletin 22 for Intense Tropical Cyclone Bingiza". Météo-France. Retrieved 14 February 2011.
  31. ^ "Tropical Cyclone Technical Bulletin 28 for Intense Tropical Cyclone Bingiza". Météo-France. Retrieved 16 February 2011.
  32. ^ "Tropical Cyclone Warning 26 for Intense Tropical Cyclone Bingiza". Météo-France. Retrieved 16 February 2011.
  33. ^ "Bingiza headed straight for Madagascar". La Sentinelle Limited. Retrieved 12 February 2011.
  34. ^ a b "TROPICAL CYCLONE WATCH — TROPICAL CYCLONE ADVICE NUMBER 1 (16U)". Tropical Cyclone Warning Centre, Perth. Retrieved 15 February 2011.
  35. ^ "TROPICAL CYCLONE ADVICE NUMBER 6 (16U)". TCWC Perth. Bureau of Meteorology (Perth). 2011-02-16. Retrieved 2011-02-16.
  36. ^ "TROPICAL CYCLONE ADVICE NUMBER 8 (16U)". TCWC Perth. Bureau of Meteorology (Perth). 2011-02-17. Retrieved 2011-02-17.
  37. ^ "TROPICAL CYCLONE TECHNICAL BULLETIN (16U)". TCWC Perth. Bureau of Meteorology (Perth). 2011-02-19. Retrieved 2011-02-19.
  38. ^ "TROPICAL CYCLONE TECHNICAL BULLETIN (16U)". TCWC Perth. Bureau of Meteorology (Perth). 2011-02-21. Retrieved 2011-02-21.
  39. ^ "TROPICAL CYCLONE TECHNICAL BULLETIN (16U)". TCWC Perth. Bureau of Meteorology (Perth). 2011-02-22. Retrieved 2011-02-22.
  40. ^ Unattributed (January 26, 2011). "Tropical Disturbance Summary 2011-01-26 09z". Fiji Meteorological Service. Retrieved January 27, 2011.
  41. ^ Unattributed (January 27, 2011). "Tropical Disturbance Summary 2011-01-27 09z". Fiji Meteorological Service. Retrieved January 27, 2011.
  42. ^ a b c Unattributed (January 31, 2011). "Tropical Cyclone Yasi". Fiji Meteorological Service. Retrieved January 31, 2011.
  43. ^ "Tropical Cyclone Formation Alert 2010-01-29 1730z". Joint Typhoon Warning Center. January 29, 2011. Retrieved January 30, 2011.
  44. ^ "JTWC Tropical Cyclone 11P Warning 2011-01-30 00z". Joint Typhoon Warning Center. January 30, 2011. Retrieved January 30, 2011.
  45. ^ Unattributed (January 30, 2010). "Tropical Disturbance Advisory 2010-01-30 0600z". Fiji Meteorological Service. Retrieved January 30, 2011.
  46. ^ "Hurricane Warning 2011-01-31 00z". Fiji Meteorological Service. Retrieved January 31, 2011.
  47. ^ "Hurricane Warning 2011-01-31 06z". Fiji Meteorological Service. January 31, 2011. Retrieved January 31, 2011.
  48. ^ "Hurricane Warning 2011-01-31 12z". Fiji Meteorological Service. Retrieved January 31, 2011.
  49. ^ "JTWC Tropical Cyclone 11P Warning 2011-01-31 15z". Joint Typhoon WarningCenter. January 31, 2011. Retrieved January 31, 2011.
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