Very nice detailed blog on 2010 Weather extremes from Jeff Masters who co-founded Weather Underground, "the wild roller-coaster ride of incredible weather events during 2010, in my mind, makes that year the planet's most extraordinary year for extreme weather since reliable global upper-air data began in the late 1940s"
Dr. Jeff Masters' WunderBlog : 2010 - 2011: Earth's most extreme weather since 1816? : Weather Underground