While tornadoes can be spawned any time of year the volatile mix of climatological ingredients exist, April is a particularly dangerous month for tornadoes in parts of the U.S.
Over the past 10 years, April comes in only behind May for average U.S. tornado counts. That average is admittedly skewed by April 2011, in which 758 U.S. tornadoes set a record for any month.
Typical April tornado risk areas. Areas typically with the highest risk of tornadoes in April are contoured white.
Tornadoes by month in theBirmingham, Ala. metro from 1950-2013. (Source: Dr. Greg Forbes)
Tornadoes by month in the Dallasmetro area from 1950-2013. (Source: Dr. Greg Forbes)
A swath from the central and southern Plains east into the Tennessee Valley is most susceptible to swarms of tornadoes in the first full month of spring. However, the tornado threat also rises markedly in April much farther north into the Mississippi and Lower Ohio Valleys.
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