It has been reported* that tropical storm Isaac heading toward Tampa, which with suspiciously good timing will arrive at the same time as the Republican convention, was in fact created for that very purpose by climate-change deniers supporting the Republicans.
Knowing that the left would like to set Tampa on fire during the convention to try to embarrass the Republicans, the heavy rains are intended to literally dampen the enthusiasm of anyone looking to spend much time outdoors throwing things at cops.
*Some guy told me. Once this gets mentioned in a second blog, it will then be widely reported and thus have even more credibility. Bonus points if you know where this sort of thing got its start.