1999–2000 South-West Indian Ocean cyclone season
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 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;
2000–01 South-West Indian Ocean cyclone season
By January 22, Charly developed a 37 km (23 mi) wide eye, surrounded by deep convection. Based on the increased organization, the storm became an intense tropical cyclone, reaching peak 10 minute winds of 185 km/h (115 mph), according to the MFR. In contrast, the JTWC estimated peak 1 minute winds of 195 km/h (120 mph). Late on January 22, the wind shear and dry air increased while waters became cooler, all of which became detrimental to the storm's structure. The eye rapidly dissipated as the convection dwindled, and within 24 hours of peak intensity, Charly was downgraded to tropical storm status. On January 24, the storm passed about 320 km (200 mi) southeast of Rodrigues. By that time, the circulation was exposed from the thunderstorms, and Charly weakened to tropical depression status on January 25. Caught in the weak low-level flow, the circulation moved erratically, first to the west, then drifting before turning to the southeast. It continued to produce some convection during this time, which spread rainfall over Mauritius and Réunion. A cold front swept Charly to the southeast, absorbing it on January 31.