Developmental environment and early evolution of the 8 May
2009 "Super Derecho"
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Slide 16 of 46
Notes: Storms along ese-moving cold pool have markedly increased in coverage and
strength, with several embedded bows and numerous mesovortices. These forward-propagating storms also have now
been joined by three bands of new, intense storms forming in area of warm frontogenesis in exit region of
rapidly-strengthening LLJ.