The graph below shows the number of daily US temperature readings over 40C, recorded at all 595 HCN stations continuously active since 1900.
NOAA and GISS claim that the 2011/2012 heatwaves were unprecedented, when in fact they weren’t even in the top ten. In 1936, there were four times as many records of 40C+ as were measured in 2011 or 2012. The graph above updates the EPA graph below to 2012.
The US was much hotter during the 1930s, and NOAA and GISS are determined to rewrite history.