“Another UHI effect – thunderstorms & lightning“. Anthony Watts copies-and-pastes a Weatherwise magazine article that discusses the Urban Heat Island effect in the context of thunderstorms. It’s real! Thunderstorm formation downwind from cities proves it!

Atlanta 2008 thunderstorm. Image from Weather Underground.

Actually, as we have repeatedly noted here, the Urban Heat Island effect is well-known. It is not disputed. It has simply been rejected on the evidence as a factor in the surface temperature record of global warming. Sorry Anthony.