too many people percieve global warming as "were all going to get really hot weather" true we will get warmer than average spells but freak weather will be common place, as we are seeing all over the world at present...
some recent things that have happened:
worst flooding ever recorded along the danube
oaklahoma hit 98oF in america yesterday.
tornadoe alley has recorded 279 twisters in the period of january to march, the usual ammount since records began has been 60 to 75.
last year birmingham was hit by a tornado (not sure if thats a bad thing or a good thing) as was coventry (again, still not sure...)
in kenya where it hasnt rained in 3 years... they are now flooded...
northern china is in drought, southern china is awash with floods
there are other mass flooding events in panama, brazil and mexico.
south eastern england = massive drought, other areas of england are at between 70 and 95% capacity but rainfall is down overall.
the amazon rainforrest has been in heavy drought since early 2005.