GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 247, Approximate Location: 45.58 N. Latitude, 87.00 W. Longitude Site Name Minneapolis Shoals Light on Lake Michigan ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1947 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 330.TIF TO ESCANABA RIVER (CUT) 1947 3 31 -1 -1 OW -1 -1 BV -1 -1 -1 -1 330.TIF 1949 3 7 -1 -1 BK -1 -1 -1 -1 -1 -1 341.TIF 1949 3 14 -1 -1 BK -1 -1 -1 -1 -1 -1 343.TIF 1950 3 13 16 -1 -1 -1 -1 -1 -1 -1 351.TIF 1950 3 27 -1 -1 PR -1 -1 SW -1 -1 -1 -1 353.TIF 1950 4 3 -1 -1 SW -1 -1 -1 -1 -1 -1 354.TIF 1952 3 17 -1 -1 SW -1 -1 -1 -1 -1 -1 370.TIF 1954 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 383.TIF BEYOND MINNEAPOLIS SHOAL 1956 3 12 -1 -1 OW -1 -1 -1 -1 -1 -1 401.TIF TO BOYER BLUFF 1957 3 4 -1 -1 IP -1 -1 -1 -1 -1 -1 409.TIF 1962 4 9 18 -1 FD -1 -1 FS -1 -1 WI -1 -1 453.TIF TO ESCANABA LIGHT 1962 4 16 -1 -1 LF -1 -1 DI -1 -1 -1 -1 454.TIF 1963 4 8 24 -1 FD -1 -1 FS -1 -1 -1 -1 462.TIF TO SAND POINT 1968 3 18 -1 -1 BK -1 -1 RT -1 -1 -1 -1 498.TIF EASTWARD ---------------------------------------------------------------------------------------------------------- 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.