Tornado Intensity Index – Update

By Paul Homewood

 

 

I have been asked to show what the Tornado Intensity Index would look like if it included the weaker EF-1 tornadoes.

 

 

 

Please be aware though that NOAA state:

 

Improved tornado observation practices have led to an increase in the number of reported weaker tornadoes….

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.

http://www.ncdc.noaa.gov/climate-information/extreme-events/us-tornado-climatology/trends