The first draft of this article was translated from the Spanish language wikipedia article "Pasillo de los Tornados"
The colloquially-named "Pasillo de los Tornados (Corridor of the Tornadoes) is a vast area of plains in South America, where tornadoes and severe storms occur frequently.[1] Many of these storms are extremely destructive, with intense storms, hail and tornadoes.
NASA conducted a study, worldwide, in 2006 with the information provided by its satellites, being able to identify those areas where the most intense storms occur. It was concluded that these occur mainly east of the Andes Mountains in Argentina . In this area, the cold winds of Patagonia and Antarctica, the warm air of Brazil, Paraguay and northern Argentina, and the dry air that comes from the Cordillera de Los Andes converge. The clash between these different air masses occurs mainly in the Pampa plain and generate conditions for intense storms, hail falls and tornadoes to develop, [2] in many ways similar to the area of the Rocky Mountains in North America.[3]
The region is considered as the second highest in frequency of tornadoes in the whole world (after Tornado Alley in North America).
With regards to tornado tracking, the lack of effective radar coverage as well as low population density results in a likely undercount of the actual number of tornadoes in this area, with "registered" tornadoes being only those that have been sighted by people.
The region was named after the Network of Urban Climatology Stations of São Leopoldo (Brazil.
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