GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project
 National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970

 Site No. 106, Approximate Location: 46.22 N. Latitude, 84.17 W. Longitude
 Site Name  Moon Island                    on St. Marys River   
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 Year Mo Da   T1   T2   C1  T1C1 T2C1  C2  T1C2 T2C2  C3 T1C3 T2C3  IMAGE   Supplemental Information
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 1923  3 13   22   -1        -1   -1        -1   -1       -1   -1  156.TIF                                   

 1944  3 13   17   -1   IN   -1   -1        -1   -1       -1   -1  309.TIF                                   
 1944  3 20   17   -1        -1   -1        -1   -1       -1   -1  310.TIF                                   

 1947  3 31   20   -1        -1   -1        -1   -1       -1   -1  330.TIF   MOON ISLE CUT                   
 1947  4  7   20   -1   SO   -1   -1        -1   -1       -1   -1  331.TIF                                   

 1951  4  9   -1   -1   BK   -1   -1        -1   -1       -1   -1  365.TIF   TO TWIN LAKES                   

 1956  4  9   -1   -1   SO   -1   -1        -1   -1       -1   -1  405.TIF                                   

 1968  4  1   16   -1   SO   -1   -1        -1   -1       -1   -1  500.TIF   TO WATSON REEF                  
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 Ice thickness is in inches, -1 = no thickness reported, see report for ice conditon codes.
 T1 = ice thickness or part of a range if T2 is present,  C1 = primary condtion of ice.
 T1C1 = thickness of C1 or part of range if T2C1 is presnet.
 C2, T1C2, T2C2, C3, T1C3, T2C3 are secondary and ternary ice conditon and condition thickness.