Timeline of the 2009-2010 South-West Indian Ocean cyclone season | |||||
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Season boundaries | |||||
First system formed | August 18, 2009 | ||||
Last system dissipated | May 29, 2010 | ||||
Strongest system | |||||
Name | Edzani | ||||
Maximum winds | 220 km/h (140 mph) (10-minute sustained) | ||||
Lowest pressure | 910 hPa (mbar) | ||||
Longest lasting system | |||||
Name | David | ||||
Duration | 13 days | ||||
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This timeline documents all of the events of the 2009–10 South-West Indian Ocean cyclone season which is the period that tropical cyclones formed in the Indian Ocean. Within the Indian Ocean most tropical cyclones form within the cyclone season which began on November 1 and will end on April 30. The scope of this article is limited to tropical cyclones that form in the Indian Ocean 30°E and 90°E to the south of the equator. When a zone of disturbed weather form or moves into the South-West Indian Ocean it is assigned a number and monitored by Météo-France who run the Regional Specialized Meteorological Center (RSMC) on Réunion Island. Should a tropical disturbance intensify and become a moderate tropical storm the two sub-regional tropical cyclone Advisory Centres in Mauritius and Madagascar in conjunction with RSMC La Réunion. The United States Joint Typhoon Warning Center (JTWC) also issue warnings on tropical cyclones in this region assigning a number with an "S" suffix. When monitoring a tropical cyclone the Joint Typhoon Warning Center will assess the cyclones intensity on the Saffir–Simpson hurricane scale whilst RSMC La Réunion, Mauritius and Madagascar use the Southwest Indian Ocean Tropical Cyclone Intensity Scale to assess a tropical cyclones intensity.
The 2007–08 South-West Indian Ocean cyclone season was the third most active tropical cyclone season, along with the 1985–86 season and behind the 1993–94 season and the 2018–19 season, with twelve named tropical cyclones developing in the region. It began on November 15, 2007, and ended on April 30, 2008, with the exception for Mauritius and the Seychelles, which ended May 15. These dates conventionally delimit the period of each year when most tropical cyclones form in the basin, which is west of 90°E and south of the Equator. Tropical cyclones in this basin are monitored by the Regional Specialised Meteorological Centre in Réunion.
The 2007–08 South-West Indian Ocean cyclone season was a cycle of the annual tropical cyclone season in the South-West Indian Ocean in the Southern Hemisphere. It began on November 15, 2007, and ended on April 30, 2008, with the exception for Mauritius and the Seychelles, which ended May 15. These dates conventionally delimit the period of each year when most tropical cyclones form in the basin, which is west of 90°E and south of the Equator. Tropical cyclones in this basin are monitored by the Regional Specialised Meteorological Centre in Réunion.
The 2007–08 South Pacific cyclone season was a below-average season with only four tropical cyclones, forming within the South Pacific to the east of 160°E. The season officially ran from November 1, 2007 to April 30, 2008, although the first cyclone, Tropical Depression 01F, formed on October 17.
The 2007–08 Australian region cyclone season was only the second season to have a tropical cyclone form in July. This timeline documents all the storm formations, strengthening, weakening, landfalls, extratropical transitions, as well as dissipation. The season officially began on 1 November 2007, and lasted until 30 April 2008. However a tropical cyclone moving into the region from the South-West Indian Ocean cyclone season on 29 July, meant that the season started 29 days after the Southern Hemisphere tropical cyclone year started on 1 July 2007. The timeline includes information which was not operationally released, meaning that information from post-storm reviews by the Australian Bureau of Meteorology, such as information about a Cyclone that was not upgraded operationally, has been included.
Intense Tropical Cyclone Hondo was the strongest and longest lived tropical cyclone to develop during the 2007–08 South-West Indian Ocean cyclone season. The third tropical cyclone and first intense tropical cyclone of the season, Hondo developed out of a tropical disturbance in early February about 1,020 km (630 mi) east-southeast of Diego Garcia. The disturbance quickly strengthened, becoming a moderate tropical storm on 4 February and a severe tropical storm the following day. After a brief period of slower intensification, Hondo rapidly intensified into an intense tropical cyclone and reached its peak intensity with winds of 215 km/h (134 mph) 10-minute winds) on 7 February. The cyclone gradually weakened over the next several days due to an increase in forward speed and a decrease in sea surface temperatures. On 12 February, Hondo rapidly degenerated into a remnant-low-pressure area. Over the following week, the remnant low traveled in a general west-northwest direction with no development. On 20 February, about 2,780 km (1,730 mi) northeast of where the final advisories were issued, the storm began to regenerate. The next day, advisories were issued on Tropical Disturbance Ex-Hondo, which briefly strengthened into a tropical depression. However, according to the Joint Typhoon Warning Center, Hondo continued to strengthen and attained winds of 95 km/h (59 mph) 1-minute winds) before passing directly over Réunion. Interaction with the island caused the storm to weaken and degenerate into a remnant low once more. The storm dissipated on 29 February after executing a counterclockwise loop.
This timeline documents all the storm formations, strengthening, weakening, landfalls, extratropical transitions, as well as dissipation during the 2008 Pacific typhoon season. The 2008 Pacific typhoon season officially started on January 1, 2008 and ended on January 1, 2009. The first tropical cyclone of the season formed on January 13. The timeline also includes information which was not operationally released, meaning that information from post-storm reviews by the various warning agencies, such as information on a storm that was not operationally warned on, has been included.
The 2008–09 South-West Indian Ocean cyclone season was a slightly above average event in tropical cyclone formation. It began on November 15, 2008, and officially ended on April 30, 2009, with the exception for Mauritius and the Seychelles, for which it ended on May 15, 2009. These dates conventionally delimit the period of each year when most tropical cyclones form in the basin, which is west of 90°E and south of the Equator. Tropical cyclones in this basin were monitored by the Regional Specialised Meteorological Centre in Réunion.
The 2009–10 South-West Indian Ocean tropical cyclone season was a near average event in tropical cyclone formation. The season officially started on July 1, 2009, and ended on June 30, 2010, after incorporating the tropical cyclone season which ran from November 1 to April 30 for all areas except for Mauritius and the Seychelles, for which it ended on May 15, 2010. In this basin which officially runs from 30 to 90E, and is, to the south of the equator, the main warning center is the Regional Specialized Meteorological Center on La Réunion Island; however they delegate the naming of Cyclones to the Meteorological services of Mauritius and Madagascar.
The 2008–09 South Pacific cyclone season was a below-average season with only six tropical cyclones occurring within the South Pacific between 160°E and 120°W. The season officially ran from November 1, 2008 to April 30, 2009 with the first disturbance of the season forming on December 1 and the last disturbance moving out of the region on April 11.
The 2003–04 South Pacific cyclone season was a below-average season with only three tropical cyclones occurring within the South Pacific to the east of 160°E. The season officially ran from November 1, 2003 to April 30, 2004 with the first disturbance of the season forming on December 4 and the last disturbance dissipating on April 23. This is the period of the year when most tropical cyclones form within the South Pacific Ocean.
The 1984–85 South-West Indian Ocean cyclone season was an average cyclone season. Tropical cyclones in this basin are monitored by the Regional Specialised Meteorological Centre in Réunion. The first storm formed in mid-November, though it was not officially named. A few days later, the first official storm of the year (Anety) formed. In December, one storm formed. During January 1985, two tropical cyclones formed towards the end of the month. Three more systems developed in a short period of time in early to mid-February. After nearly two more months of inactivity, an unusually powerful late season storm developed (Helisaonina) in mid-April, which was the strongest storm of the year. While a number of storms during the season reached severe tropical storm status, only one of those intensified further. Even though two tropical cyclones this year made landfall, no known damage was recorded.
This timeline documents all of the events of the 2009–10 South Pacific cyclone season which is the period that tropical cyclones formed in the southern Pacific Ocean. Within the Southern Pacific Ocean, most tropical cyclones form within the cyclone season which began on November 1 and will end on April 30, though occasionally cyclones form outside these times. The scope of this article is limited to tropical cyclones that form in the Indian Ocean 160°E and 120°W to the south of the equator. Should a tropical cyclone form to the west of 160°E then it will be monitored within the Australian region by the Australian Bureau of Meteorology, should a tropical cyclone form to the east of 120°W, it is unclear how it will be handled as no tropical cyclone has ever been observed in the South Pacific Ocean east of 120°W.
The 2004–05 Australian region cyclone season was a near-average season with eleven tropical cyclones occurring within the Australian region south of the equator and from 90°E to 160°E. The season officially ran from 1 November 2004 to 30 April 2005 with pre-season Tropical Cyclone Phoebe forming on 1 September and an unnamed tropical cyclone dissipating on 15 April. This is the period of the year when most tropical cyclones form within the Australian region.
The 2012–13 South-West Indian Ocean cyclone season was a slightly above average event in tropical cyclone formation in the Southern hemisphere tropical cyclone year starting on July 1, 2012, and ending on June 30, 2013. Within this basin, tropical and subtropical disturbances are officially monitored by the Regional Specialised Meteorological Centre on Réunion island, while the Mauritius and Madagascar weather services assign names to significant tropical and subtropical disturbances. The first tropical disturbance of the season developed on October 12 and rapidly developed into the earliest known intense tropical cyclone on record during October 14.
The 2013–14 South-West Indian Ocean cyclone season was an above-average event in tropical cyclone formation. The season officially began on July 1, 2013, though the first tropical system designated by Météo-France was a short-lived tropical disturbance that developed on July 8. However, the first named storm was Cyclone Amara in December. Bruce was the first very intense tropical cyclone since Edzani in 2010, which originated from the Australian region. The strongest system of the cyclone season was Hellen, also one of the most intense tropical cyclones over the Mozambique Channel. The season officially ended on June 30, 2014
The 2014–15 South-West Indian Ocean cyclone season was an above average event in tropical cyclone formation. It began on November 15, 2014, and ended on April 30, 2015, with the exception for Mauritius and the Seychelles, for which it ended on May 15, 2015. These dates conventionally delimit the period of each year when most tropical and subtropical cyclones form in the basin, which is west of 90°E and south of the Equator. Tropical and subtropical cyclones in this basin are monitored by the Regional Specialised Meteorological Centre in Réunion.
Most of the tropical cyclones of the 2013 Pacific typhoon season formed between May and November of that year. The scope of this article is the Pacific Ocean north of the equator, between 100°E and the International Date Line. Tropical storms which form in the Western Pacific basin are assigned a name by the Japan Meteorological Agency (JMA). Tropical depressions forming in this basin are given a number with a "W" suffix by the United States' Joint Typhoon Warning Center (JTWC). The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) assigns names to tropical cyclones that enter or form in the Philippine area of responsibility, but these names are not in common use outside the Philippines.
This timeline documents all of the events of the 2012 Pacific typhoon season. The scope of this article is limited to the Pacific Ocean, north of the equator between 100°E and the International Date Line. During the season, 34 systems were designated as tropical depressions by either the Japan Meteorological Agency (JMA), the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), the Joint Typhoon Warning Center (JTWC), or other National Meteorological and Hydrological Services such as the China Meteorological Administration and the Hong Kong Observatory. Since the JMA runs the Regional Specialized Meteorological Centre (RSMC) for the Western Pacific, they assigned names to tropical depressions which developed into tropical storms in the basin. PAGASA also assigned local names to systems which are active in their area of responsibility; however, these names are not in common use outside of the Philippines.
The 2016–17 South-West Indian Ocean cyclone season was a below-average season, with five tropical storms, three of which intensified into tropical cyclones. It officially began on November 15, 2016, and ended on April 30, 2017, with the exception for Mauritius and the Seychelles, for which it ended on May 15, 2017. These dates conventionally delimit the period of each year when most tropical and subtropical cyclones form in the basin, which is west of 90°E and south of the Equator. Tropical and subtropical cyclones in this basin were monitored by the Regional Specialised Meteorological Centre in Réunion, though the Joint Typhoon Warning Center issued unofficial advisories.
The 2020–21 South-West Indian Ocean cyclone season was an above-average season which produced 12 named storms, with 7 strengthening into tropical cyclones. The season started with the formation of Cyclone Alicia in the extreme northeast section of the basin on 12 November 2020, just before the official start of the season, which marked the third season in a row in which a tropical cyclone formed before the official start of the season. It officially began on 15 November 2020, and ended with the dissipation of Cyclone Jobo on 24 April, 6 days before the official end on 30 April 2021, with the exception of Mauritius and the Seychelles, which officially ended on 15 May 2021. These dates conventionally delimit the period of each year when most tropical and subtropical cyclones form in the basin, which is west of 90°E and south of the Equator. Tropical and subtropical cyclones in this basin are monitored by the Regional Specialised Meteorological Centre in Réunion and unofficially by the Joint Typhoon Warning Center.
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