Ten years ago it became obvious that the MWP had to be disappeared to make the CO2 narrative work. Nobel Prize winner Mikey Mann stepped up to the plate pushed that sucker down.
Now that they have given up on warming and changed the meme to “extreme weather” – it has become obvious that much of the 20th century needs to be disappeared. Leading this effort is NOAA, which has recently lost most of it’s tornado records prior to 1953. The Dust Bowl never happened.
2011 is the most extreme weather in Earth’s history.