FILE - In this Jan. 25, 2012, file photo, Carlos Murcia stands in his flooded home in Juanchito, in southern Colombia. Meteorologists blame torrential rains on La Nina. The National Oceanic and Atmospheric Administration said Thursday, Nov. 9, 2017 that a weak La Nina has formed and is expected to stick around for several months. (AP Photo/Carlos Julio Martinez, File)
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