GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 154, Approximate Location: 45.05 N. Latitude, 83.30 W. Longitude Site Name Alpena - Thunder Bay on Lake Huron ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1899 4 11 -1 -1 IP -1 -1 BV -1 -1 -1 -1 529.TIF 1899 4 18 -1 -1 OW -1 -1 -1 -1 -1 -1 001.TIF 1900 2 27 -1 -1 LI -1 -1 -1 -1 -1 -1 003.TIF 1900 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 004.TIF 1900 3 13 -1 -1 IP -1 -1 -1 -1 -1 -1 005.TIF (50% ICE COVER) 1900 3 20 4 16 SO -1 -1 -1 -1 -1 -1 006.TIF 1900 3 27 8 -1 -1 -1 -1 -1 -1 -1 007.TIF 1900 4 3 -1 -1 LF -1 -1 DI -1 -1 -1 -1 008.TIF 1900 4 10 -1 -1 OW -1 -1 -1 -1 -1 -1 009.TIF 1901 3 5 22 -1 -1 -1 -1 -1 -1 -1 011.TIF 1901 3 5 -1 -1 OW -1 -1 -1 -1 -1 -1 011.TIF SOUTHERN PORTION 1901 3 19 -1 -1 LI -1 -1 -1 -1 -1 -1 013.TIF EXCEPT NEAR WEST SIDE 1901 3 26 -1 -1 SI 12 120 SW -1 -1 -1 -1 014.TIF 1901 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 017.TIF 1902 3 4 -1 -1 OW -1 -1 -1 -1 -1 -1 019.TIF MOUTH: TO HALFWAY UP BAY 1902 3 18 24 120 SI -1 -1 -1 -1 -1 -1 021.TIF 1902 3 25 -1 -1 IP -1 -1 -1 -1 -1 -1 022.TIF NORTHEAST CORNER 1902 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 023.TIF 1903 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 025.TIF 1903 3 17 -1 -1 OW -1 -1 -1 -1 -1 -1 026.TIF 1904 3 8 -1 -1 NC -1 -1 -1 -1 -1 -1 030.TIF 1904 4 12 -1 -1 SO -1 -1 -1 -1 -1 -1 035.TIF 1904 4 19 -1 -1 OW -1 -1 -1 -1 -1 -1 036.TIF 1905 3 7 18 24 SO -1 -1 -1 -1 -1 -1 039.TIF 1905 3 14 22 -1 -1 -1 -1 -1 -1 -1 040.TIF 1905 3 28 -1 -1 RT -1 -1 -1 -1 -1 -1 042.TIF 1905 4 4 -1 -1 BK -1 -1 -1 -1 -1 -1 043.TIF 1905 4 11 -1 -1 BK -1 -1 -1 -1 -1 -1 044.TIF 1906 3 6 48 60 SI -1 -1 -1 -1 -1 -1 045.TIF 1906 3 13 8 -1 -1 -1 -1 -1 -1 -1 046.TIF 1906 3 20 10 -1 SO -1 -1 -1 -1 -1 -1 047.TIF 1906 4 3 -1 -1 OW -1 -1 -1 -1 -1 -1 049.TIF 1907 3 5 17 -1 SO -1 -1 -1 -1 -1 -1 051.TIF 1907 3 12 20 -1 SO -1 -1 -1 -1 -1 -1 052.TIF 1907 3 19 20 -1 -1 -1 -1 -1 -1 -1 053.TIF TO 2Mi OUT FROM DOCK 1907 3 26 -1 -1 OW -1 -1 -1 -1 -1 -1 054.TIF 1907 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 055.TIF 1908 3 3 -1 -1 SO -1 -1 WI -1 -1 -1 -1 057.TIF 1908 3 17 -1 -1 IP -1 -1 -1 -1 -1 -1 059.TIF MOST OF BAY 1908 3 24 -1 -1 FD -1 -1 -1 -1 -1 -1 060.TIF 1908 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 524.TIF 1908 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 061.TIF 1908 4 14 -1 -1 OW -1 -1 -1 -1 -1 -1 062.TIF 1909 3 2 11 -1 -1 -1 -1 -1 -1 -1 064.TIF 1909 3 9 -1 -1 DI -1 -1 -1 -1 -1 -1 065.TIF 1909 3 16 -1 -1 LI -1 -1 -1 -1 -1 -1 066.TIF 1909 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 067.TIF 1909 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 068.TIF 1909 4 13 -1 -1 OW -1 -1 -1 -1 -1 -1 070.TIF 1910 3 1 -1 -1 IP -1 -1 -1 -1 -1 -1 071.TIF 1910 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 072.TIF 1910 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 073.TIF 1910 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 074.TIF 1911 3 7 -1 -1 IP -1 -1 -1 -1 -1 -1 077.TIF 1911 3 14 -1 -1 DC -1 -1 -1 -1 -1 -1 078.TIF 1911 3 28 -1 -1 FD -1 -1 -1 -1 -1 -1 080.TIF TO 2Mi OUT FROM DOCKS 1911 4 4 -1 -1 LI -1 -1 -1 -1 -1 -1 081.TIF 1912 3 5 -1 -1 IP -1 -1 -1 -1 -1 -1 082.TIF 1912 3 12 -1 -1 SO -1 -1 -1 -1 -1 -1 083.TIF 1912 3 19 -1 -1 SO -1 -1 -1 -1 -1 -1 084.TIF 1912 3 26 29 -1 -1 -1 -1 -1 -1 -1 085.TIF 1912 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 086.TIF MOUTH OF BAY 1912 4 9 -1 -1 RT -1 -1 -1 -1 -1 -1 087.TIF 1912 4 16 24 -1 RT -1 -1 -1 -1 -1 -1 088.TIF 1912 4 23 -1 -1 OW -1 -1 -1 -1 -1 -1 089.TIF 1913 3 4 14 -1 SO -1 -1 SC -1 -1 -1 -1 090.TIF 1913 3 11 17 -1 SO -1 -1 -1 -1 -1 -1 091.TIF 1913 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 092.TIF OFF NORTH POINT 1913 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 093.TIF 1913 4 1 -1 -1 SI -1 -1 -1 -1 -1 -1 094.TIF EXTREME NORTH PORTION 1913 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 096.TIF 1914 3 3 -1 -1 IP -1 -1 -1 -1 -1 -1 098.TIF 1914 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 098.TIF EXTREME OUTER PORTION OF BAY 1914 3 10 -1 -1 SO -1 -1 -1 -1 -1 -1 099.TIF SOUTH PORTION OF BAY 1914 3 17 -1 -1 LI -1 -1 -1 -1 -1 -1 100.TIF 1914 3 24 1 2 FD -1 -1 -1 -1 -1 -1 101.TIF 1914 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 103.TIF 1914 4 14 -1 -1 OW -1 -1 -1 -1 -1 -1 104.TIF 1914 4 21 -1 -1 OW -1 -1 -1 -1 -1 -1 105.TIF 1915 3 9 -1 -1 IP -1 -1 -1 -1 -1 -1 106.TIF 1915 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 108.TIF OUTER PORTION OF BAY 1915 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 109.TIF 1915 3 30 -1 -1 IP -1 -1 -1 -1 -1 -1 109.TIF ALONG SHORE 1915 4 6 -1 -1 OW -1 -1 -1 -1 -1 -1 110.TIF 1916 3 14 1 -1 -1 -1 -1 -1 -1 -1 114.TIF 1916 3 28 -1 -1 FD -1 -1 -1 -1 -1 -1 116.TIF 1916 4 4 -1 -1 OW -1 -1 -1 -1 -1 -1 117.TIF 1917 3 6 -1 -1 IP -1 -1 -1 -1 -1 -1 120.TIF 1917 3 13 -1 -1 SO -1 -1 -1 -1 -1 -1 121.TIF 1917 3 20 -1 -1 SO -1 -1 -1 -1 -1 -1 122.TIF 1917 3 27 -1 -1 SO -1 -1 -1 -1 -1 -1 123.TIF TO 3Mi OUT 1917 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 123.TIF BEYOND 3Mi OUT 1918 3 5 -1 -1 SO -1 -1 -1 -1 -1 -1 128.TIF 1918 3 12 -1 -1 SO -1 -1 -1 -1 -1 -1 129.TIF 1918 4 2 -1 -1 SL -1 -1 -1 -1 -1 -1 132.TIF 1918 4 9 -1 -1 OW -1 -1 -1 -1 -1 -1 133.TIF 1919 3 4 -1 -1 SI -1 -1 -1 -1 -1 -1 136.TIF 1919 3 11 -1 -1 SI -1 -1 -1 -1 -1 -1 137.TIF 1919 3 18 -1 -1 SI -1 -1 -1 -1 -1 -1 138.TIF 1919 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 139.TIF 1920 3 9 24 -1 SO -1 -1 -1 -1 -1 -1 140.TIF 1920 3 16 -1 -1 IN -1 -1 -1 -1 -1 -1 141.TIF 1920 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 143.TIF 1920 4 6 -1 -1 OW -1 -1 -1 -1 -1 -1 144.TIF 1920 4 11 -1 -1 OW -1 -1 -1 -1 -1 -1 145.TIF 1934 3 6 14 18 -1 -1 -1 -1 -1 -1 228.TIF 1934 3 20 -1 -1 IP -1 -1 -1 -1 -1 -1 230.TIF TO 4 OR 5Mi OUT 1941 3 10 -1 -1 NI -1 -1 -1 -1 -1 -1 286.TIF 1944 3 20 -1 -1 SO -1 -1 -1 -1 -1 -1 310.TIF 1944 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 311.TIF 1947 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 330.TIF 1948 3 8 18 -1 IP -1 -1 BV -1 -1 -1 -1 335.TIF 1948 3 15 -1 -1 SC -1 -1 -1 -1 -1 -1 336.TIF 5 TO 6Mi OUT IN BAY 1948 3 29 -1 -1 DI -1 -1 -1 -1 -1 -1 338.TIF 1949 3 7 -1 -1 SO -1 -1 -1 -1 -1 -1 342.TIF 1949 3 21 -1 -1 DI -1 -1 -1 -1 -1 -1 346.TIF 1950 2 16 -1 -1 IP -1 -1 -1 -1 -1 -1 348.TIF TO 1 TO 2Mi OUT 1950 2 16 -1 -1 OW -1 -1 -1 -1 -1 -1 348.TIF BEYOND 1 TO 2Mi OUT 1951 3 26 -1 -1 LF -1 -1 -1 -1 -1 -1 363.TIF 1952 3 10 -1 -1 DI -1 -1 -1 -1 -1 -1 369.TIF 1952 3 24 -1 -1 IP -1 -1 -1 -1 -1 -1 371.TIF 1953 3 2 -1 -1 HF -1 -1 IJ -1 -1 -1 -1 528.TIF 1953 3 9 -1 -1 NI -1 -1 PI -1 -1 -1 -1 376.TIF TO 1/2Mi OUT 1953 3 16 -1 -1 OW -1 -1 -1 -1 -1 -1 378.TIF EXCEPT ALONG SHORE 1954 3 22 1 -1 CL -1 -1 DI -1 -1 -1 -1 384.TIF 1955 2 28 -1 -1 SO -1 -1 -1 -1 -1 -1 389.TIF 1955 3 7 10 -1 CL -1 -1 -1 -1 -1 -1 391.TIF SOUTH BAY 1955 3 21 -1 -1 HF -1 -1 -1 -1 -1 -1 394.TIF 1956 3 5 -1 -1 IP -1 -1 -1 -1 -1 -1 399.TIF 1957 2 25 10 -1 CL -1 -1 -1 -1 -1 -1 407.TIF INNER PORTION OF BAY 1957 3 4 -1 -1 LF -1 -1 NI -1 -1 -1 -1 409.TIF 1958 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 418.TIF 1958 3 17 -1 -1 OW -1 -1 -1 -1 -1 -1 419.TIF 1959 3 2 18 24 -1 -1 -1 -1 -1 -1 424.TIF 1962 2 26 6 10 SO -1 -1 BV -1 -1 -1 -1 447.TIF 1962 3 5 6 10 -1 -1 -1 -1 -1 -1 448.TIF 1962 4 2 -1 -1 FD -1 -1 DI -1 -1 -1 -1 452.TIF OUTER BAY 1964 2 24 -1 -1 IP -1 -1 -1 -1 -1 -1 465.TIF (40% 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.