September 13th, 2007 Roll Cloud

A low pressure moved thru Minnesota it was positioned a little NorthEast of Duluth bringing a cold front with cold Canadian air in it’s wake which triggered a couple of storms this morning, one moving East that was North of the Metro and a few cells South of the Metro into Iowa along the front. I was in my office that faces South, when this roll cloud appeared. When I looked out front (facing North) it trailed off into the horizon. All I had on me at the time was a cell phone for video so I shot a quick clip. Their were higher based clouds in the background but, they were a couple thousand feet higher and the roll cloud was distinct and not in anyway attached. The video was shot thru glass with a cell phone, and the roll cloud itself had contrast issues with the higher based clouds in the background.

A dozen .75 to 1.25 inch hail reports were reported with the system.

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