[Sao Paulo, September 8. Image via Getty]

A woman waits to cross an avenue in the surroundings of Congonhas, Sao Paulo's domestic airport, on September 8, 2009. Northern Argentina and southern Brazil, and the small countries of Uruguay and Paraguay wedged between them, were hit by a fierce atmospheric mass packing rain, hail and winds over 120 kilometers (70 miles) per hour. In Congonhas, many flights were delayed and pilots were being forced to rely on instruments because of zero visibility. AFP PHOTO/Mauricio Lima (Photo credit should read MAURICIO LIMA/AFP/Getty Images)