Photograph of impressive clouds associated with downburst producing thunderstorms that moved through central Missouri, the St. Louis metropolitan area, and southwest Illinois on August 13, 2005. On this particular day, thunderstorms were initiated by a slow moving cold front. The thunderstorms
began as multicell clusters, but within a few hours, merged into a bow echo structure, enhancing the possibility of damaging winds. View taken from Six Flags parking lot.
(Photo taken by Mary Steele)

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