| Summary: | Data is also submitted and available in the National Snow and Ice Data Center maintained by the National Oceanic and Atmospheric Administration. This record contains scans of print copies stored at Northwestern Michigan Collegenulls Osterlin Library. Print copies are imperfect but have been reproduced as closely as possible. This is a list of years and corresponding number of days per year that the Grand Traverse Bay has frozen. The definition of frozen comes from a March 2, 2009 article in the Traverse City Record Eagle, where "ice must form from the southern shoreline of the bay in Traverse City about six miles out to Power Island to officially be considered frozen." Note on print reads, "office of Louie Sleder". List of years that Grand Traverse Bay has frozen beginning in 1851 thru 1976. This list differs slightly from the list compiled by meteorologist Greg MacMaster(also stored in this repository.) Various groups have collected and maintained this data over the years, including the U.S. Coast Guard station in Traverse City, the Traverse City Convention and Visitornulls Bureau, Grand Traverse Historical Society, Northwestern Michigan Collegenulls Mark and Helen Osterlin Library.
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