Intense Tropical Cyclone Leon–Eline was the second longest-lived cyclone in the Indian Ocean, behind Cyclone Freddy, traveling over 11,000 km (6,800 mi) during its 29-day track through the Indian Ocean, throughout the month of February. The cyclone formed on 1 February 2000, in the Australian basin as Tropical Cyclone Leon, and was renamed Eline after crossing 90° E into the South-West Indian Ocean; there, the Météo-France office in Réunion (MFR) tracked the storm's movement and intensity. Late on 17 February, Eline made landfall near Mahanoro, Madagascar, with 10‑minute winds of 165 km/h (103 mph). The storm rapidly weakened over land, but restrengthened in the Mozambique Channel to reach peak 10‑minute winds of 185 km/h (115 mph), making it an intense tropical cyclone. On 22 February, Eline made landfall about 80 km (50 mi) south of Beira, Mozambique, near peak intensity. Eline quickly weakened over land as it moved across Southern Africa, finally dissipating over eastern Namibia on 29 February.
The 1999–2000 South-West Indian Ocean tropical cyclone season was the first on record in which two storms – Leon–Eline and Hudah – struck Mozambique at tropical cyclone intensity, or with maximum sustained winds of at least 120 km/h (75 mph). The most notable storm of the season was Eline, which was the third longest-lasting storm on record in the basin. It lasted for 29 days while traversing the southern Indian Ocean, making the strongest landfall in decades along eastern Madagascar in late February. The storm was the first in a series of three storms that struck the country in early 2000, along with Gloria in March and Hudah in April. Collectively, the three storms killed at least 316 people. The season started on November 1, 1999, and ended for most of the basin on April 30, 2000; for Mauritius and the Seychelles, the season continued until May 15. These dates conventionally delimit the period of each year when most tropical cyclones form in the basin.
The 2007 Mozambican flood began in late December 2006 when the Cahora Bassa Dam overflowed from heavy rains on Southern Africa. It worsened on February 22, 2007, when the Category 4 Cyclone Favio made landfall on the central province of Inhambane; experts tracking the cyclone predicted that it would worsen flooding in the Zambezi River valley. The Zambezi River broke its banks, flooding the surrounding areas in Mozambique. The Chire and Rivubue rivers also flooded.
Intense Tropical Cyclone Indlala was a powerful tropical cyclone that struck northeastern Madagascar in March 2007. The ninth named storm and fifth intense tropical cyclone of the 2006–07 South-West Indian Ocean cyclone season, Indlala developed on 3 March 2007 southwest of the Chagos archipelago in the central Indian Ocean. Initially a tropical disturbance, Indlala moved generally westward in its formative stages, attaining tropical cyclone status on 13 March. A day later, the Météo-France office on Réunion (MFR) estimated peak 10–minute sustained winds of 175 km/h (110 mph), although the American-based Joint Typhoon Warning Center estimated stronger 1–minute winds of 220 km/h (135 mph). Early on 15 March, the cyclone made landfall in northeastern Madagascar on the Masoala Peninsula near Antalaha, still at its peak intensity according to the MFR. Indlala rapidly weakened over land and turned southward, eventually re-emerging into the Indian Ocean on 18 March; it was last noted by the MFR on 19 March.
The National Disasters Management Institute is the disaster relief agency of Mozambique.
The October 2008 Central America floods were caused by a series of low-pressure areas including Tropical Depression Sixteen, a short-lived tropical cyclone in the 2008 Atlantic hurricane season that made landfall in Honduras. Heavy rainfall began in early October 2008 while a tropical wave passed through the region. On October 14, Tropical Depression Sixteen formed just off the northeast coast of Honduras, and at the same time a low-pressure system was on the Pacific coast. Both systems increased rainfall across the region, although the depression dropped heavy rainfall close to its center when it moved ashore on October 15. Although Tropical Depression Sixteen quickly dissipated over land, its remnants persisted for several days. Another low-pressure area interacted with a cold front on October 21, adding to the rainfall in the region.
Severe Tropical Storm Delfina was a damaging tropical cyclone that affected southeastern Africa in January 2003. The fourth named storm of the 2002–03 South-West Indian Ocean cyclone season, Delfina formed off the northwest coast of Madagascar on December 30, 2002. It quickly intensified while moving westward, becoming a strong tropical storm before hitting northeastern Mozambique on December 31. Delfina weakened while moving inland, and it was no longer classifiable as a tropical cyclone by January 1, 2003. However, its remnants moved across the country and into Malawi, later looping around and crossing back over Mozambique; the remnants of Delfina were last observed on January 9.
Tropical Cyclone Manou was a relatively rare May tropical cyclone that affected southeastern Madagascar. The final named storm of the 2002–03 South-West Indian Ocean cyclone season, Manou formed on May 2 to the southwest of Diego Garcia. It moved generally to the southwest for much of its duration, steered by a ridge to the southeast. Manou affected Saint Brandon and Mauritius with gusty winds. After an initial strengthening phase, the storm weakened but later re-intensified as it approached Madagascar. Manou developed a well-defined eye and reached peak winds only 19 km (12 mi) from the eastern Madagascar coastline. For about 12 hours, the cyclone stalled before turning to the south and weakening. Manou became extratropical on May 10 and dissipated three days later.
Very Intense Tropical Cyclone Hudah was a powerful and destructive tropical cyclone that affected Southeast Africa in April 2000. It was the last in a series of three cyclones that impacted Madagascar during the year. Hudah first developed as a disturbance embedded within the monsoon trough on 22 March, within the Australian region cyclone basin. Moving westward as the result of a strong subtropical ridge to its south, the storm quickly intensified, and reached Category 2 cyclone intensity on 25 March before entering the Southwest Indian cyclone basin. For various reasons that remain unknown, the cyclone was only designated a name by the time it had crossed into the area of responsibility of the Regional Specialized Meteorological Center in Réunion. Nonetheless, Météo-France (MFR) assigned the name Hudah to the cyclone. An eye formed, and the storm intensified into a tropical cyclone on 27 March well to the southeast of Diego Garcia. On 1 April, the MFR upgraded it to a very intense tropical cyclone, estimating peak 10-minute winds of 225 km/h (140 mph). By contrast, the Joint Typhoon Warning Center (JTWC) estimated 1-minute winds of 235 km/h (146 mph). At this time, the MFR estimated the pressure to have been 905 hPa (mbar), making Hudah the most intense tropical cyclone worldwide in 2000. Cyclone Hudah maintained peak winds until making landfall just southeast of Antalaha, Madagascar on 2 April. It weakened greatly over land, but re-attained tropical cyclone status on 5 April after moving over the Mozambique Channel. Hudah reached 10-minute winds of 160 km/h (99 mph) by the time it made landfall on Mozambique near Pebane, Mozambique, on 8 April, and dissipated by the next day.
Tropical Cyclone Haruna was a deadly storm that produced widespread flooding and a disease outbreak in southwestern Madagascar. The ninth system of the season, Haruna developed in the Mozambique Channel in the middle of February 2013 between Mozambique and southwestern Madagascar. Initially moving northward over Mozambique, the disturbance later moved slowly southward, gradually strengthening into the eighth named storm of the season and later into an intense tropical cyclone. The Météo-France office in Réunion (MFR) – the official Regional Specialized Meteorological Center in the basin – estimated the cyclone attained peak 10 minute sustained winds of 150 km/h (95 mph). Haruna made landfall near Morombe in southwestern Madagascar on February 22. It weakened significantly while crossing the country, and MFR discontinued advisories on February 24 after the storm had emerged into the Indian Ocean.
In May 2003, a tropical cyclone officially called Very Severe Cyclonic Storm BOB 01 produced the worst flooding in Sri Lanka in 56 years. The first storm of the 2003 North Indian Ocean cyclone season, it developed over the Bay of Bengal on May 10. Favorable environmental conditions allowed the system to intensify steadily while moving northwestward. The storm reached peak maximum sustained winds of 140 km/h (85 mph) on May 13, making it a very severe cyclonic storm according to the India Meteorological Department (IMD), which is the official Regional Specialized Meteorological Center for the basin. The cyclone drifted north over the central Bay of Bengal, gradually weakening due to heightened wind shear. Turning eastward, the storm deteriorated to a deep depression on May 16 before it curved northeastward and re-intensified into a cyclonic storm. It came ashore in western Myanmar and dissipated over land the following day.
The 2004 Myanmar cyclone was considered the worst to strike the country since 1968. The second tropical cyclone of the 2004 North Indian Ocean cyclone season, it formed as a depression on May 16 in the central Bay of Bengal. With low wind shear and a surge in the monsoon trough, the storm intensified while meandering over open waters. The storm eventually began a steady northeastward motion due to a ridge to the north over India. While approaching land, an eye developed in the center of the storm, indicative of a strong cyclone. On May 19, the cyclone made landfall along northwestern Myanmar near Sittwe, with maximum sustained winds estimated at 165 km/h (105 mph) by the India Meteorological Department. The storm rapidly weakened over land, although its remnants spread rainfall into northern Thailand and Yunnan province in China.
In early 2000, severe flooding occurred in the African nation of Madagascar after Cyclone Leon–Eline and Severe Tropical Storm Gloria struck the nation within a two-week period. The first storm, Eline, formed on February 1, and took an extended track across the Indian Ocean, eventually making landfall near Mahanoro on February 17. On March 1, Gloria struck northeastern Madagascar, and like Eline, moved southwestward across the country.
Severe Tropical Storm Chedza was a deadly tropical cyclone that struck Madagascar in January 2015. It formed from the Intertropical Convergence Zone and moved over Mozambique, After moving open waters, the system began organizing on January 14, becoming Tropical Storm Chedza two days later. It quickly intensified over the Mozambique Channel due to warm waters and favorable conditions, and the storm attained peak 10 minute sustained winds of 100 km/h (60 mph) on January 16. That day, Chedza moved ashore western Madagascar between Belo sur Mer and Morondava, and it quickly crossed the island while weakening. The storm briefly re-intensified, passing southwest of Réunion before turning to the southeast. Chedza became extratropical on January 19, and was last noted two days later.
Extremely Severe Cyclonic Storm Chapala was a powerful tropical cyclone that caused moderate damage in Somalia and Yemen during November 2015. Chapala was the third named storm of the 2015 North Indian Ocean cyclone season. It developed as a depression on 28 October off western India, and strengthened a day later into a cyclonic storm. Chapala then rapidly intensified amid favorable conditions. On 30 October, the India Meteorological Department (IMD) estimated that Chapala attained peak three-minute sustained winds of 215 km/h (135 mph). The American-based Joint Typhoon Warning Center (JTWC) estimated sustained winds of 240 km/h (150 mph), making Chapala among the strongest cyclones on record in the Arabian Sea. After peak intensity, Chapala skirted the Yemeni island of Socotra on 1 November, becoming the first hurricane-force storm there since 1922. High winds and heavy rainfall resulted in an island-wide power outage, and severe damage was compounded by Cyclone Megh, which struck Yemen a week later.
Cyclonic Storm Sagar was the strongest tropical cyclone to make landfall in Somalia and Somaliland in recorded history until Gati in 2020, and the first named cyclone of the 2018 North Indian Ocean cyclone season. Forming on May 16 east of the Guardafui Channel, Sagar intensified into a cyclonic storm on the next day, as it gradually organized. The storm turned to the west-southwest and traversed the entirety of the Gulf of Aden, making landfall over Somaliland on May 19, farther west than any other storm on record in the North Indian Ocean. Sagar weakened into a remnant low on May 20.
Intense Tropical Cyclone Idai was one of the worst tropical cyclones on record to affect Africa and the Southern Hemisphere. The long-lived storm caused catastrophic damage, and a humanitarian crisis in Mozambique, Zimbabwe, and Malawi, leaving more than 1,500 people dead and many more missing. Idai is the deadliest tropical cyclone recorded in the South-West Indian Ocean basin. In the Southern Hemisphere, which includes the Australian, South Pacific, and South Atlantic basins, Idai ranks as the second-deadliest tropical cyclone on record. The only system with a higher death toll is the 1973 Flores cyclone that killed 1,650 off the coast of Indonesia.
At least 30 tropical cyclones have affected the Southern African mainland. Three southeastern African countries border the Indian Ocean – Tanzania, Mozambique, and South Africa. Other inland countries also experience the effects of tropical cyclones, including Botswana, Eswatini, Lesotho, Malawi, Namibia, Zambia, and Zimbabwe.
Many countries allocated relief aid items to southern Africa after Cyclone Freddy, with a main focus on the humanitarian crisis in Malawi. Items included hygiene supplies, food rations, and safe drinking water among other things Total donations reach the millions in USD, and there was also a primary focal point on the historic and ongoing outbreak of Cholera in the region. Several nations also expressed condolences to Malawi, Mozambique, and Madagascar. The widespread and prolonged impacts prompted extensive relief efforts from the affected nations and multiple intergovernmental agencies. UNICEF and the WFP provided relief items for those affected, as well as temporary shelters.
