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;
Cyclone Raquel
During June 2015, a near record strength pulse in the Madden–Julian oscillation lead to a period of significant weather across the Western Pacific. This significant weather included a major westerly wind burst during late June, which caused a set of twin tropical cyclones to develop. The first tropical cyclone developed in the Northern Hemisphere during June 29, before it later developed into Typhoon Chan-hom. The second tropical cyclone was first noted by the Fiji Meteorological Service and the Australian Bureau of Meteorology as Tropical Disturbance 17F and Tropical Low 24U during June 28, while it was located about to the northeast of Honiara in the Solomon Islands. This system had a well-defined low level circulation centre which was located within an environment, that was marginally favourable for further development with low-moderate vertical wind shear offset by a poleward outflow. The system subsequently moved south-westwards towards the Solomon Islands under the influence of a ridge of high pressure and gradually developed further and was classified as Tropical Depression 17F during the next day.