WGN-TV Chief Meteorologist Tom Skilling and the WGN Weather Center staff provide daily coverage of weather in the Chicago area.

Skies darken over Chicago's Montrose Harbor area as Thursday's derecho moves in

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on July 11, 2008 3:13 PM | Permalink

Thanks to Tracey Surface for these revealing shots of Thursday evening's ominous skies.
--Tom Skilling, Chief Meteorologist, WGN-TV/Chicago Tribune

Photos courtesy of Tracey Surface, Chicago