At AGU 2013: Are tornadoes getting stronger? No.
NOAA’s National Climatic Data Center: 'With increased National Doppler radar coverage, increasing population, and greater attention to tornado reporting, there has been an increase in the number of tornado reports over the past several decades. This can create a misleading appearance of an increasing trend in tornado frequency.' - 'The bar charts below indicate there has been little trend in the frequency of the stronger tornadoes over the past 55 years.'
Warmist claim refuted: 'So, like Mann’s hockey stick, Elsner’s data is a proxy, not the actual measurement, and the hockey stick slope we see (that James B. Elsner says isn’t even sure is real) at the end of his graph is created by data from one year: 2011.'Q&A the presenter (James B. Elsner) remarks that he’s “not even sure if the slope is completely real“.
With increased National Doppler radar coverage, increasing population, and greater attention to tornado reporting, there has been an increase in the number of tornado reports over the past several decades. This can create a misleading appearance of an increasing trend in tornado frequency. To better understand the variability and trend in tornado frequency in the United States, the total number of EF-1 and stronger, as well as strong to violent tornadoes (EF-3 to EF-5 category on the Enhanced Fujita scale) can be analyzed. These tornadoes would have likely been reported even during the decades before Doppler radar use became widespread and practices resulted in increasing tornado reports. The bar charts below indicate there has been little trend in the frequency of the stronger tornadoes over the past 55 years.
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Q&A the presenter (James B. Elsner) remarks that he’s “not even sure if the slope is completely real“.
