2008–09 South-West Indian Ocean cyclone season

The cyclone season in Südwestindik 2008-2009 was officially launched on 15 November 2008 and ended on 30 April 2009, with the exception of Mauritius and the Seychelles, where they ended only on 15 May 2009. These data conventionally delimit the period of meteorological year in the southern hemisphere, in which form most of the tropical cyclones in the southwest Indian Ocean. Tropical cyclones are monitored by the Regional Specialized Meteorological Centre ( RSMC ) in La Réunion, France in this basin. The area of ​​responsibility of Météo -France comprises the Indian Ocean south of the equator and west of 90 ° E longitude. Tropical cyclones in this basin are called cyclones.

Storms

Tropical disturbance 01

On October 6, the RSMC La Réunion classified a low pressure area south-southwest of Diego Garcia as Tropical disturbance 01 Although intensification was predicted, the system started on his way toward Rodriques with its resolution. On October 8, the last warning was issued prior to this tropical system.

Moderate Tropical Storm Asma

On 16 October, the RSMC La Réunion classified a low pressure area north-west of Diego Garcia as a tropical disturbance 02 On the morning of 17 October, the disturbance intensified into a tropical depression that moved in a southwesterly direction. The next morning, Météo -France classified the system back to a fault back because the storm nearly strong winds had a few hundred kilometers away from the storm center. A decrease in vertical wind shear and a shift of the storm center prompted the RSMC, enforce up the intensity on October 19 again. During the day the RSMC La Réunion classified the system at a moderate tropical storm high and the Sub - Regional Tropical Cyclone Advisory Centre in Mauritius had the second tropical system of the season the name Asmaa to.

Moderate Tropical Storm Bernard

As of November 15, a low pressure area that had organized east-southeast of Diego Garcia on 19 November so far that it has been classified by the RSMC La Reunion, the third tropical low pressure system of the cyclone year 2008/2009 was formed. The system moved eastward and intensified throughout the day from a tropical disturbance to tropical depression and on 20 November to moderates tropical storm Bernard. Six hours later classified the RSMC the intensity of tropical depression back. This moved further east and arrived on 21 November in the area of ​​responsibility of TCWCs in Perth, Western Australia where it broke up a day later.

Severe Tropical Storm Cinda

On the evening of December 16, the Joint Typhoon Warning Center Tropical Cyclone Formation Alert was one of a fast -organizing fault west of Diego Garcia. The center gained momentum near the floor and pulled sufficient convection in itself, so that the RSMC La Reunion classified the system as a tropical depression. The wind shear was low and the effluent convenient for the further development, so that the system has been incremented in the morning of December 18th to moderates Tropical Storm Cinda in height. Located south-southwest direction of Diego Garcia removing themselves Cinda intensified to severe tropical storm, but weakened during the day again. -Increasing wind shear made ​​sure that the eye was north of the convection. On the morning of December 21, Cinda degenerate due to the strong wind shear in a remnant low, about 400 km off the coast of Madagascar.

Severe Tropical Storm Dongo

The RSMC pursued the remnant low of Tropical Cyclone Billy, who had formed in December 2008 in the Australian region, as it arrived in early January in the southwestern Indian Ocean. On 8 January 2009, the remnants of the former tropical cyclone formed north, a new tropical system that had been organized in the late morning so far as to be classified as a tropical disturbance must. On January 9, the area of ​​low pressure had intensified into a tropical storm and was named Dongo. Dongo strengthened further and reached its greatest intensity on 11 January as a severe tropical storm with sustained winds of 50 knots and a central pressure of 984 hPa, the cyclone followed a south- southeast direction and became extratropical on 12 January. The system broke up the next day completely.

Moderate Tropical Storm Eric

On January 17, unidentified Météo -France in Reunion, a weather disturbance northeast of La Reunion, the much better organized and on January 18, west-northwest of Madagascar was classified as a tropical disturbance system and intensified on 19 January at a moderate tropical storm.

Intense Tropical Cyclone Fanele

On January 17, the JTWC pointed to a tropical depression off the coast of Madagascar in Antananarivo in the Mozambique Channel. The system showed signs of rapid development of the near-bottom deep down, and the presence of an anti- cyclone in the amount created favorable conditions. The next day the JTWC Tropical Cyclone Formation Alert was one, and shortly thereafter classified the RSMC La Reunion Tropical disturbance than 07 Six hours later, the RSMC classified the system boots to a tropical depression. The next day, the system intensified initially at a moderate during the day and then to a severe tropical storm.

Fanele intensified in the morning of January 20 to an Intense Tropical cyclone with wind speeds of 100 knots. Between 0:00 and2 00 clock UTC on January 21, the cyclone crossed the coastline of Madagascar. About Land of the cyclone lost its force. In the early morning of 22 January, Fanele had weakened to depression. The system then came back across the water of the Indian Ocean, where Fanele again could intensify into a moderate tropical storm before it became an extratropical storm. The impact of the cyclone killed nine people and made at least 20,000 homeless.

Intense Tropical Cyclone Gael

On February 1, the RSMC La Réunion classified a system a few hundred kilometers south of Diego Garcia as a tropical disturbance and the system classified a few hours later to tropical weather disturbance 08 high. The system steadily moved westward and strengthened further. On 3 February, Météo -France stated that the Moderate Tropical Storm Gael has formed. In the afternoon of the same day, the French weather service issued for the islands of Réunion to "yellow" alert and on February 4, called the Weather Service from Mauritius its alert level II, since Gael to the island from the northeast approached. Early in the February 5 classified the RSMC Gael high to severe tropical storm.

The next two days kept Gael on this strength before the storm for severe tropical storm weakened. The storm swung east of Madagascar on a southern direction, and later to the southeast. On February 10, Gael went over the Southern Ocean in a system with a cold core on the RSMC and let his warnings.

Severe Tropical Storm Hina

Southeast of Diego Garcia was formed from the 20th February, a tropical weather disturbance that intensifies, so the next day the JTWC Tropical Cyclone Forming an alert triggered. The RSMC La Reunion classified the system the next day to a moderate tropical storm on and forgave the name Hina; the description of the system is JTWCs 16S. During the day Hina built a well-defined organization and formed band structures. On 22 February, Hina had strengthened into a severe tropical storm. The storm struck a generally southern direction of pull and stayed far away from land. Late on 25 February, the cyclone weakened to a tropical disturbance and, as wind shear, the convection has exempted from the center later.

Tropical Depression 10

On 6 March, the Joint Typhoon Warning Center began with the observation of a low pressure area ( JTWC designation 19S ), which intensified into a tropical depression on March 9. However, the system did not develop further and broke up because of strong wind shear in the morning of the 10th of March, without developing into a tropical cyclone. It was the first tropical depression in the area of ​​responsibility of Météo -France, who could not intensify into a tropical storm since the formation of the first tropical system on October 6.

Severe Tropical Storm Izilda

In the Mozambique Channel was formed to March 21, a tropical disturbance that has been classified by the JTWC on March 24, as Tropical Cyclone 24S. The system drifted very slowly in a southerly and southwesterly direction. At noon of March 25 scaled Météo -France Izilda as a severe tropical cyclone reached its peak intensity with ten-minute sustained winds of 60 knots. Izilda retained this ability in during the day, due to the interaction with the island of Madagascar and wind shear is Izilda disbanded on 27 March.

When approaching the Madagascar coast were issued storm warnings for the areas between Morondava and Toliara and the local fishermen have been asked not to leave the port due to heavy swell. The authorities feared a worsening of the situation for about 4000 by former floods on the island of homeless inhabitants. Izilda happened as a tropical depression, the island of Europe; from there, no damage was reported. Izilda brought moderate rainfall, with in parts of the southwest and the island of Madagascar Europe. Up to 8 m high waves reached the coastlines of Mozambique and Madagascar, as Izilda was almost stationary on March 25.

Severe Tropical Storm Jade

On April 4, was formed northeast of La Reunion, the twelfth tropical weather disturbance of the cyclone season 2008-2009 in the southwestern Indian Ocean, which was upgraded from RSMC La Reunion early on April 5, to a tropical depression and the same afternoon at a moderate tropical cyclone with the name Jade. The system moved in a southwesterly direction. In the evening hours of April 5, Jade reached the strength of a severe tropical storm that on April 6, initially weakened after landfall in Antalaha on Madagascar in the period 6:00 to 8:00 UTC clock at a moderate tropical cyclone and finally to a tropical depression over land. On April 7, the system reached in the southeast of Madagascar back to water and reintensivierte to a moderate tropical cyclone. On the 8th of April, the RSMC the intensity of the southeast now pulling down the system.

Heavy rain brought the cyclone in the north of the island a building to collapse, which three people were killed. Five people lost their lives in the southeast of the country. Overall, Jade killed on the island of 15 people and made 22,900 homeless.

Chronological overview of the season

Storm names

Tropical cyclones in this basin received a name, if they achieve at least the strength of a moderate tropical storm. If a system is this strength reached to the west of 55 ° E longitude, the name is assigned by the Sub - regional Tropical Cyclone Advisory Centre in Madagascar; reaches the storm of this strength between 55 ° and 90 ° east longitude, the Regional Tropical Cyclone Advisory Centre in Mauritius is responsible for the naming. New names lists are given out every year, so no names will be deleted from the list of names of tropical cyclones. The list of names for the cyclone season in Südwestindik 2008-2009 was announced by Météo -France on August 20.

• Asma
• Bernard
• Cinda
• Dongo
• Eric
• Fanele
• Gael
• Hina
• Izilda

• Jade
• Kago
• Lisebo
• Magoma
• Neva
• Owami
• Pulane
• Qoli
• Rod

• Sama
• Tsholo
• Uzale
• Vimbai
• Wada
• Xylo
• Yamba
• Zita