Meteorological history | |
---|---|
Formed | 7 February 2008 |
Dissipated | 22 February 2008 |
Intense tropical cyclone | |
10-minute sustained (MFR) | |
Highest winds | 185 km/h (115 mph) |
Highest gusts | 260 km/h (160 mph) |
Lowest pressure | 930 hPa (mbar);27.46 inHg |
Category 4-equivalent tropical cyclone | |
1-minute sustained (SSHWS/JTWC) | |
Highest winds | 230 km/h (145 mph) |
Lowest pressure | 929 hPa (mbar);27.43 inHg |
Overall effects | |
Fatalities | 93 direct,176 missing |
Damage | $30 million (2008 USD) |
Areas affected | Madagascar |
IBTrACS | |
Part of the 2007–08 South-West Indian Ocean cyclone season |
Intense Tropical Cyclone Ivan was a powerful tropical cyclone that struck Madagascar in February 2008. Forming from a persistent area of convection on 7 February,Ivan initially tracked southeastward,before looping to the west-southwest. Encountering favourable conditions,it strengthened to attain peak winds on 17 February before striking northeastern Madagascar. It degenerated into a remnant low pressure area as it crossed the island,and briefly re-organized into a weak tropical depression before dissipating on 22 February.
Ivan caused heavy damage in Madagascar,leaving severe flooding and wind damage. In Île Sainte-Marie,the worst hit area,90% of the infrastructure was destroyed,and 70% of the structures were destroyed. On mainland Madagascar,over 400,000 acres (1,600 km2) of cultivated crops were destroyed,leaving hundreds of families without food. In addition,severe flooding and high winds in Toamasina left the entire city without electricity or drinkable water. In all,over 330,000 people were left homeless,and the storm caused 93 deaths.
On 5 February, an area of convection persisted about 555 km (900 mi) north of Réunion in the southwest Indian Ocean. The system maintained a broad low-level circulation with associated deep convection, and it slowly developed banding features. [1] By early on 7 February, the circulation had become better defined as it remained in an area of weak wind shear and strong diffluence. [2] At 06:00 UTC, Météo-France (MFR) classified it as Tropical Depression Eleven about 880 km (550 mi) north-northeast of Mauritius. [3] Around the same time, the Joint Typhoon Warning Center (JTWC) began issuing advisories on the system as Tropical Cyclone 18S. [4] The depression tracked east-southeastward, under the influence of a mid-level ridge. A cutoff low to the south of the system enhanced upper-level conditions, and it quickly strengthened into Tropical Storm Ivan. [5]
The storm rapidly organized and developed an eye feature. [6] Its intensification rate slowed as an upper-level trough began restricting outflow, and the motion of Ivan became nearly stationary as it entered an area of weak steering currents. [7] With its overall environment remaining favourable, the JTWC upgraded Ivan to tropical cyclone status – winds greater than 119 km/h (74 mph) – early on 9 February. [8] However, the MFR retained Ivan as a strong tropical storm. [9] Late on 9 February, the storm temporarily weakened when wind shear increased, [10] though the next day it re-intensified as convection increased; a banding eye formed in the center of the convection, prompting the JTWC to re-upgrade Ivan to tropical cyclone status late on 10 February. [11] On 11 February, the MFR upgraded Ivan to tropical cyclone status 1025 km (640 mi) northeast of Mauritius. [12]
By 14 February, it had sped up and entered a more favourable environment, becoming a severe tropical storm. [13] On 15 February, Ivan was re-upgraded to a tropical cyclone as favourable conditions persisted. Ivan was further upgraded to an Intense Tropical Cyclone on 16 February as it moved closer to Madagascar. Ivan made landfall north of Fanoarivo, Madagascar on 17 February. [14] Once overland, rapid weakening occurred due to the rugged terrain of the island. [15] Ivan was forecast to regenerate over the Mozambique Channel into a tropical depression once it left Madagascar. [16] Ivan traversed Madagascar, heading southwest. Its remnants emerged back over water on 21 February, and Météo-France resumed advisories on "filling depression Ex-Ivan". [17] Ivan, severely disrupted by Madagascar, did not strengthen any further; the last advisory was issued on 22 February. [18]
Cyclone Ivan moved ashore on Madagascar near the city of Toamasina on 17 February, producing winds of 125 mph (200 km/h). [19] According to local news agencies, Sainte Marie island off the coast of Madagascar was the highest affected area, with 9 people killed and 90% of the island's infrastructure destroyed, including a hotel which collapsed. [20] On the island, all flights were suspended or canceled during the storm, and most areas were left without electric power. [20] Also, 75 percent of the structures on the island were completely destroyed. [21]
On mainland Madagascar, 100,000 acres (400 km2) of rice crops were destroyed, and 300,000 acres (1,200 km2) of other cultivated crops were destroyed. [22] Because of this, many families had little or no food to eat. [22] In Analanjirofo, the worst hit region on the mainland Madagascar, 80,000 people were left homeless, and most of the schools, houses and other structures were lost as a result of the flooding and high wind. [22] Another major aspect of the damage there was the Antaratasy bridge, a connector between the region of Atsinanana and cities to the north, which was completely destroyed, isolating several people from their families. [23] Its collapse, in addition to the extensive damage to communications, made it difficult or impossible to contact people who may have been affected by Ivan. [23]
In the city of Toamasina, all water and electricity were cut off as a result of the storm. [23] High winds downed trees and power lines, and rising flood waters were the focus of concern. [23] In the region of Alaotra Mangoro Region, almost 23,000 people were in need of assistance, and flooding caused extensive damage. [24] In the Analamanga Region, 18,000 people were reported to be left without shelter, and in the Atsinanana Region, up to 13,000 people were left homeless. [24] In total, 190,000 people were homeless as a result of the cyclone [25] and a total of 93 fatalities occurred. [26]
Following the cyclone, the U.S. Agency for International Development airlifted relief commodities and supplies to Madagascar. The U.S. Agency for International Development also provided 320 rolls of plastic sheeting valued at $213,100 (2008 USD), which provided shelter assistance to 3,000 affected families, [27] and they provided an additional $100,000 (2008 USD) to CARE and the U.N. World Food Program to re-establish ground access to affected areas, and deliver emergency supplies and food aid. This brought the total U.S. Government's assistance to Madagascar following the cyclone to more than $300,000. [27]
Almost 140 volunteers were provided by Malagasy Red Cross in seven districts in the eastern part of the country to help in relief aid. The Malagasy Red Cross received extra supplies from the French Red Cross which mobilized its intervention platform in the Indian Ocean to provide logistical support. Twelve tonnes of material was provided from the main center on La Reunion Island, including tarpaulins, tool kits, generators, water tablets and other emergency supplies. [28] Also, the Malagasy president made a donation of 8 millions of ariary to local branches of the Malagasy Red Cross along with 20 tonnes of rice. As a result of this, the Red Cross was able to distribute emergency items to 1,207 families; each family received 16 kilograms (35 pounds) of rice, 500 grams (17 ounces) of salt, 1.5 litres (50 fluid ounces) of oil, two bars of soap, candles and a lighter. [28]
The 2007 Pacific typhoon season was a below average season which featured 24 named storms, fourteen typhoons, and five super typhoons. It was an event in the annual cycle of tropical cyclone formation, in which tropical cyclones form in the western Pacific Ocean. The season ran throughout 2007, though most tropical cyclones typically develop between May and November. The season's first named storm, Kong-rey, developed on March 30, while the season's last named storm, Mitag, dissipated on November 27. The season's first typhoon, Yutu, reached typhoon status on May 18, and became the first super typhoon of the year on the next day.
The 2008 Pacific typhoon season was a below average season which featured 22 named storms, eleven typhoons, and two super typhoons. The season had no official bounds; it ran year-round in 2008, but most tropical cyclones tend to form in the northwestern Pacific Ocean between May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
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 Australian region cyclone season was a slightly below-average tropical cyclone season. The season began with an early start, with the formation of the first tropical cyclone on 29 July, which was only recognized as a tropical cyclone during post-season analysis. This was the second time that a tropical cyclone had formed during July. The other one was Cyclone Lindsay in the 1996–1997 season. The next tropical cyclone that formed was Cyclone Guba, which formed on 13 November with TCWC Port Moresby assigning the name Guba on 14 November, which was the first named storm within TCWC Port Moresby's area of responsibility since Cyclone Epi in June 2003. Guba was also the first cyclone to occur in the Queensland region in November since 1977.
Typhoon Sepat, known in the Philippines as Typhoon Egay, was the eighth named tropical storm and the strongest tropical cyclone of the 2007 Pacific typhoon season, that affected the Philippines and made landfall in Taiwan and Fujian. Sepat originated on August 11 via a low-circulation center SE of Naha, Okinawa, and was named by the Japan Meteorological Agency as Sepat on August 12 and Egay in the Philippines by PAGASA as it entered the PAR. Sepat underwent an explosive intensification on the night of August 13, reaching peak intensity at Category 5-equivalent super typhoon intensity the following morning. The storm maintained its strength for 2 days, until it underwent an eyewall replacement cycle, just before he storm makes landfall in Taiwan on August 17 as a Category 3-equivalent typhoon. After crossing the Taiwanese strait, Sepat; already weakening into Category 1 status due to unfavorable conditions, made a second landfall in China on August 18, 2007. The storm persisted across Mainland China, as it transitioned into an extratropical cyclone on August 20, and Sepat, now an extratropical low continued through the Chinese mainland until it finally dissipated near Yunnan Province on August 24.
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 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.
Intense Tropical Cyclone Jokwe was the first tropical cyclone to make landfall in Mozambique since Cyclone Favio struck in the previous year, and was the most recent cyclone to make landfall on Mozambique until Cyclone Dineo in 2017. The tenth named storm of the 2007–08 South-West Indian Ocean cyclone season, Jokwe was first classified as a tropical depression on 2 March over the open Southwest Indian Ocean. It tracked west-southwest, crossing northern Madagascar as a tropical storm on 5 March before intensifying into a tropical cyclone on 6 March. Jokwe rapidly intensified to reach peak winds of 195 km/h (121 mph), before weakening slightly and striking Nampula Province in northeastern Mozambique. It quickly weakened while paralleling the coastline, though the storm restrengthened as it turned southward in the Mozambique Channel. Late in its duration, it remained nearly stationary for several days, and steadily weakened due to wind shear before dissipating on 16 March.
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.
Intense Tropical Cyclone Fanele was the first cyclone of tropical cyclone status to strike western Madagascar since Cyclone Fame one year prior. It formed on January 18, 2009 in the Mozambique Channel, and rapidly organized as it remained nearly stationary. Fanele ultimately turned toward the southwest Madagascar coastline, reaching peak winds of 185 km/h (115 mph), according to the Réunion Météo-France office (MFR). It weakened before moving ashore in Menabe Region southwest of Morondava, and rapidly weakened over land. Fanele briefly re-intensified after reaching open waters, only to become an extratropical cyclone by January 23.
The 2010–11 South-West Indian Ocean cyclone season was the least active cyclone season on record in the basin, tied with 1982–83, producing only three systems of gale intensity. This was due to cooler than normal water temperatures and the Walker circulation – a broad atmospheric circulation – causing unusually moist conditions in the eastern Indian Ocean and unusually dry conditions in the western Indian Ocean. The basin includes the waters of the ocean south of the equator and west of 90º E to the eastern coast of Africa.
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Tropical Cyclone Bingiza was the only named storm to make landfall in the inactive 2010–11 South-West Indian Ocean cyclone season. The second of three storms, Bingiza developed on 9 February to the northeast of Madagascar. For a few days it meandered generally southwestward, failing to intensify significantly. On 12 February, the storm began a steady westward track as environmental conditions became more favorable. In a 24‑hour period, Bingiza developed from a moderate tropical storm into an intense tropical cyclone with a well-defined eye. After attaining peak 10–minute sustained winds of 155 km/h (96 mph), the cyclone moved ashore in northeastern Madagascar on 14 February and quickly weakened as it crossed the country. Bingiza emerged into the Mozambique Channel as a weak tropical disturbance, and it turned southward to move across western Madagascar. Bingiza attained tropical storm status before making its final landfall near Morondava, degenerating into a remnant low on 17 February, and completely dissipating two days later.
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