n Journal of the South African Institution of Civil Engineers - Tornado activity in South Africa : technical paper

Volume 36, Issue 1
  • ISSN : 1021-2019



Tornadoes are the most violent windstorms on earth, and while they are regarded as relatively rare events in Southern Africa several large tornadoes have occurred in South Africa's recent history. An analysis of tornado activity in South Africa is presented in this paper, together with a tornado risk model applicable to South African conditions. This model is applicable in those cases in which the largest dimension of the building or structure is of the same order of magnitude, or smaller, than the path width of the tornado.

Tornado's is die hewigste windstorms op aarde. Terwyl hulle as relatief seldsame gebeurtenisse in Suidelike Afrika beskou word, het verskeie groot tornado's in Suid-Afrika se onlangse verlede voorgekom. 'n Ontleding van tornado-aktiwiteit in Suid-Afrika word in hierdie verhandeling weergegee, tesame met 'n tornadorisikomodel wat op Suid-Afrikaanse toestande van toepassing is. Hierdie model is van toepassing op daardie gevalle waarin die grootste afmeting van die gebou of struktuur, van dieselfde grootteorde of kleiner is as die breedte van die tornado se pad.

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