This phenomenon caused by differences in air temperature that is in the same area at different temperatures and stray them is absorbed into one of the locations. The air adjacent to the water raised fast and furious. As a result, the surrounding air flow replace the loop wind twisted around in a cold air mass moving through the area above the surface of the water that is warmer than. When air expands, and cool down until one point. Steam, it will a lot of condensation. See, like a hurricane Looks khlainguang Chang Connectivity and cloud the water.