Spinning Ice Circle Found in North Dakota River (Video)
Retired engineer George Loegering discovered a circle of ice spinning slowly in the Sheyenne River, North Dakota. Experts say that this weather phenomenon was probably caused by a combination of cold, dense air and an eddy in the river.
via Neatorama
Read more: http://dailypicksandflicks.com/2013/11/27/spinning-ice-circle-found-in-north-dakota-river-video/
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