Joe Bastardi tweeted this NCEP analysis to me, and alarm bells immediately went off in my head. The 1953 NCEP map is nonsense.
September, 1953 was an incredibly hot month in the eastern US, from start to finish. Most of Illinois and Indiana were over 100 degrees on this date in 1953.
Maximum temperatures during September 1953 averaged six degrees warmer than this September. Yet NCEP says this year is hotter.
September, 1953 was much hotter than this September.
What is going on?