GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 020, Approximate Location: 47.95 N. Latitude, 84.88 W. Longitude Site Name Michipicoten Harbor on Lake Superior ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1934 4 17 -1 -1 IP -1 -1 BV -1 -1 -1 -1 234.TIF 1934 5 1 -1 -1 IP -1 -1 -1 -1 -1 -1 236.TIF TO 10Mi OUT 1935 3 12 -1 -1 SO -1 -1 BV -1 -1 -1 -1 238.TIF 1935 3 19 -1 -1 SO -1 -1 WI -1 -1 -1 -1 239.TIF TO 9Mi OUT 1935 3 19 -1 -1 DI -1 -1 -1 -1 -1 -1 239.TIF BEYOND 9Mi OUT 1935 3 26 -1 -1 IP -1 -1 BV -1 -1 -1 -1 240.TIF 1935 3 26 12 20 -1 -1 -1 -1 -1 -1 240.TIF 1935 4 2 18 -1 -1 -1 -1 -1 -1 -1 241.TIF 1935 4 9 18 -1 -1 -1 -1 -1 -1 -1 242.TIF 1936 3 17 -1 -1 -1 -1 -1 -1 -1 -1 245.TIF TO 10 TO 20Mi OUT 1936 3 23 -1 -1 IP -1 -1 WI -1 -1 -1 -1 246.TIF TO 7Mi OUT 1936 3 30 -1 -1 IP -1 -1 -1 -1 -1 -1 247.TIF TO 8Mi OUT 1936 4 6 -1 -1 IP -1 -1 -1 -1 -1 -1 248.TIF TO 7 TO 9Mi OUT 1936 4 13 -1 -1 IP -1 -1 -1 -1 -1 -1 249.TIF TO 8Mi OUT 1936 4 27 -1 -1 IP -1 -1 BV -1 -1 -1 -1 251.TIF 1937 3 8 8 -1 -1 -1 -1 -1 -1 -1 254.TIF TO 1Mi BEYOND POINT 1937 3 29 -1 -1 BK -1 -1 -1 -1 -1 -1 257.TIF TO WITHIN 1/2Mi OF DOCKS 1938 3 7 -1 -1 BK -1 -1 -1 -1 -1 -1 261.TIF 1938 3 14 -1 -1 FD -1 -1 -1 -1 -1 -1 262.TIF 1938 3 21 -1 -1 FD -1 -1 SW -1 -1 -1 -1 263.TIF 1938 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 264.TIF 1938 4 4 -1 -1 OW -1 -1 -1 -1 -1 -1 265.TIF 1938 4 11 -1 -1 OW -1 -1 -1 -1 -1 -1 266.TIF 1939 3 6 10 -1 -1 -1 -1 -1 -1 -1 268.TIF 1939 3 13 -1 -1 SO -1 -1 WI -1 -1 -1 -1 269.TIF TO 10Mi OUT 1939 5 1 -1 -1 IP -1 -1 -1 -1 -1 -1 276.TIF TO 6Mi OUT 1952 3 17 -1 -1 IP -1 -1 -1 -1 -1 -1 370.TIF TO 1Mi OUT 1953 3 16 -1 -1 OW -1 -1 -1 -1 -1 -1 378.TIF 1954 3 1 -1 -1 BK -1 -1 SW -1 -1 -1 -1 381.TIF 1961 3 13 7 -1 -1 -1 -1 -1 -1 -1 442.TIF AT DOCK 1961 3 13 12 16 BK -1 -1 RF -1 -1 -1 -1 442.TIF OUTER HARBOR 1970 4 14 -1 -1 IP -1 -1 -1 -1 -1 -1 516.TIF (70% ICE COVER) 1970 4 21 -1 -1 IP -1 -1 -1 -1 -1 -1 517.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.