NASA reports Gulf-based evaporation is creating "oil rain," which is precisely what you think it is.
[T]hey showed up as if they had almost a millimeter of oil in the cloud. And these hydrocarbon-laden clouds – when they reach land – would in fact rain oil.
Leifer thinks this oil rain is an unprecedented oil spill phenomenon – a combination of the Gulf’s high humidity and the columns of thick smoke from burning oil. A lot of things about the BP blowout made it unlike other oil spills.
Gather enough rain and you, too, could be a millionaire.