The latest extreme "climate change" evidence from NOAA confirms that severe weather events, such as maximum rainfall and temperature records, are not trending higher during the 21st century as expected - establishes that high levels of CO2 have not been driving U.S. weather extremes
(click on image to enlarge)
This chart (a followup to this chart) depicts both maximum records for rainfall and temperature for U.S. states, with counts by decades. For maximum temperature records, 24 states initially set their record during the 1930's. For maximum rainfall records, the 1990's saw 10 states set their records.
The IPCC's climate doomsday scientists have hypothesized that increasing atmospheric CO2 levels would accelerate global warming that would then produce dangerous hot weather extremes; these hot weather extremes would then lead to more frequent extreme weather events, such as record-setting rainfalls.
Per NOAA's dataset of maximum records, this catastrophic global warming hypothesis is not well supported by the U.S. empirical evidence. The chart clearly indicates that while CO2 levels have increased (black dots and curve), extreme hot record-setting temperature events have declined and are trending down (the red curve). In addition, the maximum U.S. rainfall events have flattened (green curve) with a very slight downward trend.
Without a doubt, this actual empirical evidence reveals a hot U.S. climate of extreme temperatures during the decades of the 1910's, 1920's and 1930's. This period generated 70% of all state maximum temperature records, yet only 12% of maximum rainfall records come from the same period.
As the U.S. cooled from the late 1930's through the late 1970's, one can discern from the chart a distinct increase in maximum record-setting rainfall events. And then there is the peak of maximum rainfall records during the 1990's, followed by a rather dramatic falloff during the 21st century (that is curiously concurrent with the dramatic falloff of extreme hot, record-setting temperature events).