Earlier this week, Michael Mann implied that a 100 degree day in Huntsville, Alabama was evidence of global warming. Had he done any actual research, he would have known that temperatures in the Southeastern US were much hotter prior to 1960. Southeastern US USHCN stations have recorded 60,157 100º + temperature readings since the mid-19th century.
As CO2 has increased, the frequency of hot days has plummeted in the Southeastern US.
The longest 90 degree heatwave in the Southeastern US was 172 days in 1907
During the summer of 1954, Conway, Arkansas had 72 days over 100 degrees. The last one occurring on September 27.
And in 1943, Conway had eleven days over 110F (43C.)