According to this EPA document, only 50% of the US was unusually hot in 1936, and 60% of the US was hot in 2012.
This document was derived from NOAA’s Climate Extremes Index (CEI.) It is trivial to demonstrate that the NOAA CEI is wrong.
In 1936, 78% of USHCN stations recorded 100 degree temperatures, compared to 58% in 2012. The CEI shows accurate numbers for 2012, but the 1936 numbers are massively understated. The average peak temperature of the 78% over 100 degrees in 1936 was an incredible 108 degrees.
But it is worse than it seems – the 1936 temperatures were not just over 100 degrees, but they were way over 100 degrees. In 1936, 24% of the US reached 110 degrees – compared to only 4% in 2012.
During the summer of 1936, the entire country was hot.
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