GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 151, Approximate Location: 45.06 N. Latitude, 83.42 W. Longitude Site Name Thunder Bay River, MI on Lake Huron ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1899 4 18 -1 -1 OW -1 -1 -1 -1 -1 -1 001.TIF ALPENA 1902 3 4 -1 -1 OW -1 -1 -1 -1 -1 -1 019.TIF ALPENA: BRIDGE TO BAY 1905 3 21 -1 -1 RT -1 -1 -1 -1 -1 -1 041.TIF ALPENA 1916 3 14 -1 -1 BK -1 -1 -1 -1 -1 -1 114.TIF ALPENA 1917 3 27 -1 -1 LI -1 -1 -1 -1 -1 -1 123.TIF ALPENA 1934 4 10 -1 -1 OW -1 -1 -1 -1 -1 -1 233.TIF ALPENA 1940 3 11 -1 -1 SO -1 -1 -1 -1 -1 -1 278.TIF 1940 4 1 -1 -1 RT -1 -1 -1 -1 -1 -1 281.TIF ALPENA 1941 3 3 11 -1 SO -1 -1 -1 -1 -1 -1 285.TIF ALPENA 1941 3 10 10 12 -1 -1 -1 -1 -1 -1 286.TIF ALPENA 1941 3 17 10 -1 -1 -1 -1 -1 -1 -1 287.TIF ALPENA 1942 3 9 6 8 -1 -1 -1 -1 -1 -1 292.TIF 1942 3 16 -1 -1 SO -1 -1 RT -1 -1 -1 -1 293.TIF 1942 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 294.TIF BELOW SECOND AVENUE BRIDGE 1942 3 23 -1 -1 RT -1 -1 -1 -1 -1 -1 294.TIF ABOVE SECOND AVENUE BRIDGE 1944 3 6 10 -1 -1 -1 -1 -1 -1 -1 308.TIF ALPENA 1944 3 13 10 -1 SO -1 -1 -1 -1 -1 -1 309.TIF ALPENA 1944 3 20 -1 -1 SO -1 -1 -1 -1 -1 -1 310.TIF ALPENA 1944 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 311.TIF ALPENA 1945 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 315.TIF TO THE SECOND BRIDGE 1946 3 4 11 -1 -1 -1 -1 -1 -1 -1 318.TIF 1946 3 11 -1 -1 OW -1 -1 -1 -1 -1 -1 319.TIF 1947 3 10 11 -1 -1 -1 -1 -1 -1 -1 327.TIF ALPENA 1947 3 17 10 -1 -1 -1 -1 -1 -1 -1 328.TIF ALPENA 1947 3 31 -1 -1 SO -1 -1 -1 -1 -1 -1 330.TIF ALPENA 1948 3 8 15 -1 -1 -1 -1 -1 -1 -1 335.TIF ALPENA 1948 3 15 15 -1 SO -1 -1 -1 -1 -1 -1 336.TIF ALPENA 1949 3 7 8 -1 -1 -1 -1 -1 -1 -1 342.TIF ALPENA 1949 3 21 -1 -1 DI -1 -1 -1 -1 -1 -1 346.TIF ALPENA 1950 2 16 9 11 -1 -1 -1 -1 -1 -1 348.TIF ALPENA 1951 3 26 -1 -1 LF -1 -1 -1 -1 -1 -1 363.TIF ALPENA 1952 3 10 -1 -1 SO -1 -1 -1 -1 -1 -1 369.TIF ALPENA 1952 3 17 -1 -1 SO -1 -1 -1 -1 -1 -1 370.TIF ALPENA 1952 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 371.TIF ALPENA 1953 3 2 10 -1 SO -1 -1 -1 -1 -1 -1 528.TIF ALPENA 1953 3 9 -1 -1 SO -1 -1 -1 -1 -1 -1 376.TIF ALPENA 1953 3 16 -1 -1 OW -1 -1 -1 -1 -1 -1 378.TIF ALPENA: RIVER MOUTH 1956 2 27 10 12 -1 -1 -1 -1 -1 -1 397.TIF ALPENA 1956 3 5 -1 -1 SO -1 -1 -1 -1 -1 -1 399.TIF ALPENA 1957 3 4 -1 -1 DI -1 -1 -1 -1 -1 -1 409.TIF ALPENA 1958 3 10 -1 -1 IP -1 -1 SW -1 -1 -1 -1 418.TIF ALPENA 1958 3 17 -1 -1 RT -1 -1 -1 -1 -1 -1 419.TIF ALPENA 1965 3 1 -1 -1 FS -1 -1 IJ -1 -1 -1 -1 474.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.