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
On August 1, in the middle of the southern hemisphere's winter, an area of convection persisted in the northeastern portion of the basin about 740 km (460 mi) northeast of Diego Garcia. At that time, an associated circulation was exposed to the east of the thunderstorms. At 06:00 UTC that day, the MFR initiated advisories on Tropical Disturbance 1. After the system organized further, the JTWC also began tracking the system as Tropical Cyclone 01S, estimating winds of 65 km/h (40 mph). With a ridge to the south, the system tracked generally westward, briefly becoming a tropical depression on August 1. An approaching trough weakened the ridge, allowing the depression to turn southwestward. Located in an area of moderate wind shear, the system failed to intensify further, and it dissipated on August 3.