GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 128, Approximate Location: 45.84 N. Latitude, 84.61 W. Longitude Site Name Mackinac Island Harbor on Lake Huron ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1901 4 2 22 -1 SO -1 -1 -1 -1 -1 -1 015.TIF 1904 3 1 26 -1 SC -1 -1 -1 -1 -1 -1 029.TIF 1907 3 19 12 -1 RT -1 -1 -1 -1 -1 -1 053.TIF 1908 3 17 18 20 NC -1 -1 -1 -1 -1 -1 059.TIF 1908 3 24 18 20 NC -1 -1 -1 -1 -1 -1 060.TIF 1908 3 31 18 20 -1 -1 -1 -1 -1 -1 524.TIF 1909 3 16 12 -1 NC -1 -1 -1 -1 -1 -1 066.TIF 1909 3 23 14 -1 SO -1 -1 NC -1 -1 -1 -1 067.TIF 1910 3 1 16 -1 -1 -1 -1 -1 -1 -1 071.TIF 1910 3 15 16 -1 NC -1 -1 -1 -1 -1 -1 073.TIF 1910 3 22 16 -1 RT -1 -1 -1 -1 -1 -1 074.TIF 1911 3 7 14 -1 -1 -1 -1 -1 -1 -1 077.TIF 1911 3 14 10 -1 RT -1 -1 -1 -1 -1 -1 078.TIF 1911 3 21 10 -1 RT -1 -1 -1 -1 -1 -1 079.TIF 1911 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 080.TIF 1912 3 12 24 -1 -1 -1 -1 -1 -1 -1 083.TIF 1912 3 19 24 -1 -1 -1 -1 -1 -1 -1 084.TIF 1912 4 2 24 -1 RT -1 -1 -1 -1 -1 -1 086.TIF 1913 3 11 20 -1 -1 -1 -1 -1 -1 -1 091.TIF 1914 3 3 18 -1 -1 -1 -1 -1 -1 -1 098.TIF 1914 3 10 18 -1 NC -1 -1 -1 -1 -1 -1 099.TIF 1914 3 17 18 -1 RT -1 -1 -1 -1 -1 -1 100.TIF 1914 3 31 10 -1 RT -1 -1 -1 -1 -1 -1 102.TIF 1915 3 9 15 -1 -1 -1 -1 -1 -1 -1 106.TIF 1915 3 16 15 -1 -1 -1 -1 -1 -1 -1 107.TIF 1915 3 23 12 -1 RT -1 -1 -1 -1 -1 -1 108.TIF 1915 4 13 -1 -1 OW -1 -1 -1 -1 -1 -1 111.TIF 1916 3 7 15 -1 -1 -1 -1 -1 -1 -1 113.TIF 1916 3 14 15 -1 -1 -1 -1 -1 -1 -1 114.TIF 1916 3 21 15 -1 SO -1 -1 -1 -1 -1 -1 115.TIF 1916 3 28 15 -1 SC -1 -1 -1 -1 -1 -1 116.TIF 1916 4 4 14 -1 RT -1 -1 -1 -1 -1 -1 117.TIF 1918 4 9 -1 -1 IP -1 -1 SW -1 -1 -1 -1 133.TIF 1920 3 23 20 -1 -1 -1 -1 -1 -1 -1 142.TIF 1930 3 11 14 -1 IP -1 -1 BV -1 -1 -1 -1 203.TIF 1931 3 17 10 -1 -1 -1 -1 -1 -1 -1 211.TIF 1932 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 215.TIF 1932 3 15 4 -1 -1 -1 -1 -1 -1 -1 216.TIF 1947 3 3 11 14 SO -1 -1 -1 -1 -1 -1 326.TIF 1947 3 10 11 14 -1 -1 -1 -1 -1 -1 327.TIF 1955 2 28 6 12 -1 -1 -1 -1 -1 -1 389.TIF 1955 3 7 9 15 SO -1 -1 -1 -1 -1 -1 391.TIF 1956 2 27 18 -1 -1 -1 -1 -1 -1 -1 397.TIF 1956 3 5 14 16 -1 -1 -1 -1 -1 -1 399.TIF 1957 2 25 6 -1 -1 -1 -1 -1 -1 -1 407.TIF 1958 3 17 15 16 -1 -1 -1 -1 -1 -1 419.TIF 1959 3 23 36 -1 -1 -1 -1 -1 -1 -1 427.TIF 1959 3 30 36 -1 -1 -1 -1 -1 -1 -1 429.TIF 1959 4 6 36 -1 -1 -1 -1 -1 -1 -1 430.TIF 1960 3 7 18 -1 SO -1 -1 -1 -1 -1 -1 434.TIF 1960 3 14 19 -1 -1 -1 -1 -1 -1 -1 435.TIF 1960 3 28 20 -1 SO -1 -1 -1 -1 -1 -1 437.TIF 1961 3 6 12 18 -1 -1 -1 -1 -1 -1 441.TIF 1961 3 13 4 20 RT -1 -1 -1 -1 -1 -1 442.TIF 1961 3 20 18 -1 -1 -1 -1 -1 -1 -1 443.TIF 1961 3 27 12 18 -1 -1 -1 -1 -1 -1 444.TIF 1962 3 5 12 36 -1 -1 -1 -1 -1 -1 448.TIF 1962 3 26 12 24 -1 -1 -1 -1 -1 -1 451.TIF 1963 3 4 24 48 -1 -1 -1 -1 -1 -1 457.TIF 1966 2 28 18 22 FD -1 -1 FS -1 -1 CL -1 -1 483.TIF 1967 3 6 15 -1 -1 -1 -1 -1 -1 -1 490.TIF 1967 4 3 11 -1 -1 -1 -1 -1 -1 -1 494.TIF 1968 3 4 15 -1 -1 -1 -1 -1 -1 -1 520.TIF 1968 3 11 15 -1 -1 -1 -1 -1 -1 -1 497.TIF 1968 3 18 15 -1 -1 -1 -1 -1 -1 -1 498.TIF 1968 3 25 14 -1 SI -1 -1 -1 -1 -1 -1 499.TIF 1968 4 1 6 10 -1 -1 -1 -1 -1 -1 500.TIF (50% ICE COVER) ---------------------------------------------------------------------------------------------------------- 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.