Chase Log

June 24, 2009 South Dakota Long Lived Supercell

June 24th had potential. Good deep layer shear, decent moisture, high instability and a mesolow along an outflow boundary would provide all the ingredients to produce several supercells in South Dakota. We spent part of the afternoon in Murdo and waited for something to happen. Finally by early evening, a tornado warned supercell formed and right turned strongly into far south central South Dakota and eventually into Nebraska. This storm had great structure and tried several times to produce a tornado. It did produce hail to baseball size.

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