Ice circles are thin and circular slabs of ice that rotate slowly in the water. It is believed that they form inefdy currrents. Ice discs have most frequently been observed in scandinavia and North america , but they are occasionally recorded as far south as England and Waled An ice disc was observed in Wales in December 2008 and another was reported in England in January 2009. An ice disc was observed on the Sheyenne River in North Dakota in December 2013. An ice circle of approximately 50 ft. in diameter was observed and photographed in Lake Katrine, New York on the Escopus creaker around January 23, 2014. In Idaho, extreme weather led to a rare sighting of an Ice disk on the Snake River on January 22, 2014.
An unusual natural phenomenon, ice disks occur in slow moving water in cold climates and can vary in size, with circles more than 15 metres (49 ft) in diameter observed.
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