Debris on a flat roof can wreak havoc during any rain event or hurricane. Drains, scuppers and downspouts can easily get clogged causing roofing system failure and even collapse from the extreme dead load of ponding water. Loose condensing units and obsolete mechanical equipment left on roof can tear up a roof during a hurricane. Often A/C units are replaced on flat roofs but are not anchored to the stands and literally just laying completely loose. Don't wait until it's too late, get your flat roofs inspected in the winter before the rainy season.