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

 Site No. 350, Approximate Location: 41.63 N. Latitude, 87.32 W. Longitude
 Site Name  Gary                           on Lake Michigan     
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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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 1940  3 24   -1   -1   OW   -1   -1        -1   -1       -1   -1  280.TIF                                   

 1969  3  3   -1   -1   WI   -1   -1        -1   -1       -1   -1  504.TIF                                   
 1969  3 17   -1   -1   WI   -1   -1        -1   -1       -1   -1  506.TIF   TO PORT INDIANA                 

 1970  3 17   18   -1        -1   -1        -1   -1       -1   -1  512.TIF   GARY HARBOR (90% ICE COVER)     
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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.