ricky and haarp:
ricky is once again full of crap, however he did say one thing:
microwaves are indeed radio waves, just at a high frequency.
in haarp their use was to study aurora by blasting the upper atmosphere with a billion watts of microwave radiation . although with some minor tweaking on the frequency could cause clouds to form by heating any water vapor in the atmosphere (which cools then condenses to form clouds) similar to how your microwave oven works.
i dont see this as anything more than a local (to the transmitter) occurrence though.
just for comparison the haarp project can put a billion watts of energy into the atmosphere; your average (and cat 1 is the most common hurricane) cat 1 hurricane has the power of 1000 hiroshima bombs (or more) per day in its cat 1 lifetime.