After New Orleans was destroyed by Hurricane Katrina, there was a news story about how some climatologists hypothesized that with warmer ocean surface temperatures, hurricanes forming over the ocean would acquire more kinetic energy, and thus be more powerful on average. That seems to be a simple direct link between global warming and extreme weather. Cyclone Cyril formed over North America, so if the surfare temperature of the north Atlantic is indeed higher than it used to be, that would explain the severity of the storms.

A bomb, H bomb, Minuteman / The names get more attractive / The decisions are made by NATO / The press call it British opinion -- The Three Johns