Date of Maximum Probability
of a Tornado Occurrence (two maps).
MAP #1:  Any Tornado

Julian Day = day of the year, starting with January 1 and ending on December 31.
For example, skipping February 29 & Leap Years,
March 31 = Day #90; April 30 = Day #120; May 31 = Day #151, etc.



MAP #2: A Significant Tornado (F-2 or larger)

National Severe Storms Laboratory NSSL Maps
Created by Dr. Harold Brooks,
Head, Mesoscale Applications Group, NSSL


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UNL
Applied Climate Sciences,
School of Natural Resources