The biggest threats were mudslides and flash flooding , said CNN meteorologist Reynolds Wolf . NEW : Leogane continues to be one of the hardest - hit cities . Reports tell of destroyed houses , downed trees and flooded rivers . Aid workers are already struggling to keep up with a cholera outbreak . It could dump 15 inches of rain over Haiti and cause severe flooding and damage .
NEW : Leogane continues to be one of the hardest - hit cities . Reports tell of destroyed houses , downed trees and flooded rivers . Aid workers are already struggling to keep up with a cholera outbreak . It could dump 15 inches of rain over Haiti and cause severe flooding and damage .