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Cyclogenesis and Extra-tropical Cyclones Over Southeastern South America


Closed atmospheric circulations developing in the southeastern regions of South America typically form near the eastern coasts of Uruguay and Southern Brazil and then propagate southeastwards, reaching their maximum intensity over the South Atlantic. The diagram below shows an example of a cyclone which displaced from the coast of Uruguay to the Atlantic Ocean.
09 September 2009 / 0000UTC. Example of cyclogenesis near eastern South America (IR 10.8 image – channel 4 from GOES13 and MSLP).