GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 259, Approximate Location: 45.31 N. Latitude, 86.95 W. Longitude Site Name Plum Island Harbor on Lake Michigan ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1914 3 10 18 20 -1 -1 -1 -1 -1 -1 099.TIF 1914 3 17 18 -1 -1 -1 -1 -1 -1 -1 100.TIF 1915 3 23 14 28 -1 -1 -1 -1 -1 -1 108.TIF 1934 4 17 20 -1 -1 -1 -1 -1 -1 -1 234.TIF 1935 3 26 19 -1 -1 -1 -1 -1 -1 -1 240.TIF 1935 4 9 9 -1 -1 -1 -1 -1 -1 -1 242.TIF 1941 3 24 18 -1 -1 -1 -1 -1 -1 -1 288.TIF 1950 3 20 24 -1 -1 -1 -1 -1 -1 -1 352.TIF 1951 3 26 16 22 -1 -1 -1 -1 -1 -1 363.TIF 1958 3 24 18 -1 -1 -1 -1 -1 -1 -1 420.TIF 1960 3 7 18 -1 -1 -1 -1 -1 -1 -1 434.TIF LIFEBOAT STATION 1967 3 13 5 -1 -1 -1 -1 -1 -1 -1 491.TIF 1967 3 20 1 -1 SI -1 -1 -1 -1 -1 -1 492.TIF 1968 3 4 24 -1 -1 -1 -1 -1 -1 -1 520.TIF ---------------------------------------------------------------------------------------------------------- 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.