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

 Site No. 009, Approximate Location: 48.42 N. Latitude, 89.25 W. Longitude
 Site Name  Port Arthur In BW              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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 1919  3  4   16   -1        -1   -1        -1   -1       -1   -1  136.TIF                                   
 1919  3 11   16   -1        -1   -1        -1   -1       -1   -1  137.TIF                                   
 1919  3 18   16   -1        -1   -1        -1   -1       -1   -1  138.TIF                                   
 1919  3 21   16   -1        -1   -1        -1   -1       -1   -1  139.TIF                                   

 1920  3  9   24   -1        -1   -1        -1   -1       -1   -1  140.TIF                                   
 1920  3 16   34   -1        -1   -1        -1   -1       -1   -1  141.TIF                                   
 1920  3 23   34   -1        -1   -1        -1   -1       -1   -1  142.TIF                                   
 1920  3 30   34   -1        -1   -1        -1   -1       -1   -1  143.TIF                                   
 1920  4  6   25   -1        -1   -1        -1   -1       -1   -1  144.TIF                                   

 1921  3 15   15   -1        -1   -1        -1   -1       -1   -1  147.TIF                                   
 1921  3 22   14   -1        -1   -1        -1   -1       -1   -1  148.TIF                                   

 1932  3  8   18   -1        -1   -1        -1   -1       -1   -1  215.TIF                                   
 1932  3 22   18   -1        -1   -1        -1   -1       -1   -1  217.TIF                                   

 1942  4 13   -1   -1   DI   -1   -1        -1   -1       -1   -1  297.TIF                                   

 1948  4 12   30   -1        -1   -1        -1   -1       -1   -1  340.TIF                                   

 1955  3  7   20   25        -1   -1        -1   -1       -1   -1  391.TIF                                   

 1959  4 13   -1   -1   OW   -1   -1        -1   -1       -1   -1  431.TIF   ENTRANCES: TO BW                

 1960  2 29   18   20        -1   -1        -1   -1       -1   -1  522.TIF                                   
 1960  3  7   12   22        -1   -1        -1   -1       -1   -1  434.TIF                                   

 1964  3 16   32   -1        -1   -1        -1   -1       -1   -1  468.TIF                                   

 1965  3 15   27   -1   SL    1   -1        -1   -1       -1   -1  476.TIF                                   
 1965  4 19   29   -1        -1   -1        -1   -1       -1   -1  481.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.