the south-west indian ocean is located within the southern hemisphere between the africa's east coast and 90 e and is primarily monitored by the meteo france's la reunion rsmc, while the mauritian, australian indonesian, and malagasy weather services also monitor parts of it.
an unusually large south atlantic storm struck the southern coast of south africa on 7 june 2017 with wind speeds as high as 120 km/h. wave heights of 9–12 metres were recorded between cape columbine and cape agulhas. the storm directly caused eight deaths and damaged 135 schools across the western cape.
severe tropical storm domoina in 1984 caused 100 year floods in south africa and record rainfall in swaziland. the fourth named storm of the season, domoina developed on january 16 off the northeast coast of madagascar. with a ridge to the north, the storm tracked generally westward and later southwestward.
the 2018–19 south-west indian ocean cyclone season was the costliest and the most active season ever recorded since reliable records began in 1967. additionally, it is also the deadliest cyclone season recorded in the south-west indian ocean, surpassing the 1891–92 season, in which the 1892 mauritius cyclone devastated the island of mauritius.
during 2017, tropical cyclones formed within seven different tropical cyclone basins, located within various parts of the atlantic, pacific and indian oceans.during the year, a total of 146 tropical cyclones had formed this year to date. 88 tropical cyclones had been named by either a regional specialized meteorological center rsmc or a tropical cyclone warning center tcwc .
cyclones rarely form in other tropical ocean areas, which are not formally considered tropical cyclone basins. tropical depressions and tropical storms occur occasionally in the south atlantic , and the only full-blown tropical cyclones on record were 2004's hurricane catarina , which made landfall in brazil , 2010's tropical storm anita, which formed off the coast of rio grande do sul and .
a south american hurricane is a tropical cyclone that affects the continent of south america or its countries. the continent is rarely affected by tropical cyclones, though most storms to hit the area are formed in the north atlantic ocean. typically, strong upper level winds and its proximity to the equator prevents north atlantic impacts.
tropical cyclones are named for historical reasons and so as to avoid confusion when communicating with the public, as more than one tropical cyclone can exist at a time. names are dn in order from predetermined lists. they are usually assigned to tropical cyclones with one-, three- or ten-minute windspeeds of at least 65 km/h 40 mph .
intense tropical cyclone idai / ɪ ˈ d aɪ, ˈ iː d aɪ / 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 1,300 people dead and many more missing. idai is the deadliest tropical cyclone recorded in the south-west .
the month featured cyclone idai, which is currently the deadliest tropical cyclone of the year, responsible for 1,007 deaths in southern africa. idai was also the costliest cyclone in the south-west indian ocean basin, inflicting more than $2 billion usd in damages.
the horn of africa has experienced the effects of 14 north indian ocean tropical cyclones since 1984, resulting in at least 108 fatalities. all but two of the storms struck somalia from the east. the other two – a storm in may 1984 and cyclone sagar in may 2018 – traversed the gulf of aden and struck northern somalia. sagar killed 78 people in somalia, djibouti, and ethiopia.
parent article: list of tornadoes and tornado outbreaks these are some notable tornadoes, tornado outbreaks, and tornado outbreak sequences that have occurred in the southern hemisphere including oceania, and, for the purposes of this list, all of south america and africa.
a hurricane is a tropical cyclone that occurs in the atlantic ocean and northeastern pacific ocean, and a typhoon occurs in the northwestern pacific ocean; in the south pacific or indian ocean, comparable storms are referred to simply as 'tropical cyclones' or 'severe cyclonic storms'.
this is a list of wettest tropical cyclones by country, using all known available sources.data is most complete for australia, cuba, dominican republic, japan, hong kong, mexico, taiwan, micronesia's yap and chuuk, and the united states, with fragmentary data available for other countries.
south atlantic tropical cyclones are unusual weather events that occur in the southern hemisphere.strong wind shear, which disrupts the formation of cyclones, as well as a lack of weather disturbances favorable for development in the south atlantic ocean, make any strong tropical system extremely rare, and hurricane catarina in 2004 is the only recorded south atlantic hurricane in history.
the 2019–20 south-west indian ocean cyclone season is a current event of the annual cycle of tropical cyclone and subtropical cyclone formation. the season officially began on 15 november, however, the formation of the first system—zone of disturbed weather 01—occurred on 22 july 2019, well before the official start of the season.
the circulation moved across much of africa, eventually reaching northern namibia then known as south-west africa . april 1952 tanzania cyclone. on april 13, 1952, a tropical cyclone was first observed north of the comoros. the cyclone moved west-southwestward toward the coast of africa at a low latitude.
south-west indian ocean africa – 90 e cyclone idai nearing landfall in mozambique in march 2019. within the south-west indian ocean in the southern hemisphere between africa and 90 e, a tropical or subtropical disturbance is named when it is judged to have intensified into a tropical storm with winds of at least 34 kn 39 mph; 63 km/h . this is defined as being when gales are either .