There have only been 20 EF1+ tornadoes observed so far this year (lowest since 1953). The average by Apr 21 is 157–> http://www.spc.noaa.gov/wcm/
Prof. Roger Pielke Jr: ‘There have only been 20 EF1+ tornadoes observed so far this year (lowest since 1953). The average by Apr 21 is 157’
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