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

 Site No. 004, Approximate Location: 48.70 N. Latitude, 88.40 W. Longitude
 Site Name  Black Bay                      on Lake Superior     
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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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 1955  4 11   -1   -1   SO   -1   -1        -1   -1       -1   -1  396.TIF                                   

 1959  4  6   -1   -1   SO   -1   -1        -1   -1       -1   -1  430.TIF                                   

 1962  4 23   -1   -1   SO   -1   -1        -1   -1       -1   -1  455.TIF                                   

 1963  4 22   -1   -1   SO   -1   -1   FD   -1   -1       -1   -1  464.TIF                                   

 1964  3  2   -1   -1   SO   -1   -1        -1   -1       -1   -1  466.TIF   ALONG SHORE                     
 1964  3 16   -1   -1   FS   -1   -1        -1   -1       -1   -1  468.TIF                                   
 1964  3 23   -1   -1   FS   -1   -1        -1   -1       -1   -1  469.TIF                                   

 1966  3 14   -1   -1   HF   -1   -1   SO   -1   -1       -1   -1  485.TIF                                   
 1966  3 21   -1   -1   SO   -1   -1        -1   -1       -1   -1  486.TIF                                   
 1966  3 28   -1   -1   SO   -1   -1        -1   -1       -1   -1  487.TIF                                   

 1967  4 17   -1   -1   SO   -1   -1        -1   -1       -1   -1  496.TIF                                   

 1969  3 31   -1   -1   IP   -1   -1        -1   -1       -1   -1  508.TIF                                   
 1969  4  7   -1   -1   SW   -1   -1        -1   -1       -1   -1  509.TIF                                   
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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.