GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 320, Approximate Location: 43.23 N. Latitude, 86.25 W. Longitude Site Name Muskegon Harbor on Lake Michigan ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1900 3 6 12 -1 -1 -1 -1 -1 -1 -1 004.TIF 1900 3 13 11 -1 -1 -1 -1 -1 -1 -1 005.TIF 1901 3 5 8 -1 -1 -1 -1 -1 -1 -1 011.TIF 1901 3 12 10 -1 -1 -1 -1 -1 -1 -1 012.TIF 1901 3 19 6 -1 -1 -1 -1 -1 -1 -1 013.TIF 1901 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 013.TIF HARBOR ENTRANCE 1901 3 26 9 -1 -1 -1 -1 -1 -1 -1 014.TIF 1901 4 2 6 -1 RT -1 -1 -1 -1 -1 -1 015.TIF 1901 4 9 -1 -1 OW -1 -1 -1 -1 -1 -1 016.TIF 1902 3 4 11 -1 -1 -1 -1 -1 -1 -1 019.TIF 1902 3 11 9 -1 -1 -1 -1 -1 -1 -1 020.TIF 1902 3 18 -1 -1 IP -1 -1 -1 -1 -1 -1 021.TIF 1903 3 3 14 -1 -1 -1 -1 -1 -1 -1 024.TIF 1903 3 10 12 -1 -1 -1 -1 -1 -1 -1 025.TIF 1904 3 15 30 -1 NC -1 -1 -1 -1 -1 -1 031.TIF 1904 3 22 -1 -1 NC -1 -1 -1 -1 -1 -1 032.TIF 1904 3 29 -1 -1 RT -1 -1 -1 -1 -1 -1 033.TIF 1905 3 14 18 -1 -1 -1 -1 -1 -1 -1 040.TIF 1905 3 21 15 -1 -1 -1 -1 -1 -1 -1 041.TIF 1906 3 13 -1 -1 RT -1 -1 -1 -1 -1 -1 046.TIF 1907 3 5 14 -1 -1 -1 -1 -1 -1 -1 051.TIF 1907 3 12 14 -1 -1 -1 -1 -1 -1 -1 052.TIF 1907 3 19 12 -1 -1 -1 -1 -1 -1 -1 053.TIF 1908 3 3 16 -1 -1 -1 -1 -1 -1 -1 057.TIF 1909 3 23 3 8 BK -1 -1 -1 -1 -1 -1 067.TIF 1933 3 21 -1 -1 PI -1 -1 -1 -1 -1 -1 222.TIF HARBOR ENTRANCE 1934 3 13 -1 -1 SI -1 -1 -1 -1 -1 -1 229.TIF 1934 3 27 -1 -1 BK -1 -1 -1 -1 -1 -1 231.TIF 1939 3 20 -1 -1 HF -1 -1 DI -1 -1 PI -1 -1 270.TIF 1943 3 1 -1 -1 HF -1 -1 -1 -1 -1 -1 298.TIF 1943 3 8 11 -1 -1 -1 -1 -1 -1 -1 299.TIF 1943 3 15 11 -1 -1 -1 -1 -1 -1 -1 300.TIF 1943 3 29 8 -1 RT -1 -1 -1 -1 -1 -1 302.TIF 1944 3 6 -1 -1 IP -1 -1 -1 -1 -1 -1 308.TIF 1944 3 13 8 -1 SI -1 -1 -1 -1 -1 -1 309.TIF CHANNEL 1946 3 4 12 -1 SW -1 -1 -1 -1 -1 -1 318.TIF TO 1Mi OUT 1947 2 19 -1 -1 OW -1 -1 -1 -1 -1 -1 325.TIF 1947 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 326.TIF 1947 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 327.TIF 1947 3 17 10 -1 -1 -1 -1 -1 -1 -1 328.TIF 1947 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 329.TIF 1948 3 1 -1 -1 OW -1 -1 -1 -1 -1 -1 334.TIF 1948 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 337.TIF 1950 3 6 -1 -1 WI -1 -1 -1 -1 -1 -1 350.TIF 1951 3 5 -1 -1 OW -1 -1 -1 -1 -1 -1 360.TIF 1952 2 25 -1 -1 OW -1 -1 -1 -1 -1 -1 367.TIF 1952 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 368.TIF 1952 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 369.TIF 1953 2 24 -1 -1 SI -1 -1 -1 -1 -1 -1 375.TIF HARBOR ENTRANCE 1953 3 2 -1 -1 SI -1 -1 -1 -1 -1 -1 528.TIF HARBOR ENTRANCE 1953 3 9 -1 -1 SI -1 -1 -1 -1 -1 -1 376.TIF HARBOR ENTRANCE 1955 2 28 4 6 -1 -1 -1 -1 -1 -1 389.TIF 1957 3 4 2 4 SI -1 -1 PN -1 -1 -1 -1 409.TIF 1958 2 24 3 7 FD -1 -1 DI -1 -1 PN -1 -1 416.TIF INNER HARBOR 1958 3 10 3 5 RT -1 -1 PN -1 -1 -1 -1 418.TIF 1959 4 6 -1 -1 LI -1 -1 -1 -1 -1 -1 430.TIF 1960 2 29 3 -1 -1 -1 -1 -1 -1 -1 522.TIF 1963 3 4 12 -1 -1 -1 -1 -1 -1 -1 457.TIF 1964 3 2 -1 -1 OW -1 -1 -1 -1 -1 -1 466.TIF ALL DOCKS 1964 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 467.TIF 1965 3 1 7 -1 -1 -1 -1 -1 -1 -1 474.TIF 1965 3 8 5 -1 -1 -1 -1 -1 -1 -1 475.TIF 1965 3 15 -1 -1 LF -1 -1 RT -1 -1 -1 -1 476.TIF 1965 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 477.TIF 1965 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 478.TIF 1965 4 5 2 -1 -1 -1 -1 -1 -1 -1 479.TIF 1967 3 13 7 -1 DI -1 -1 -1 -1 -1 -1 491.TIF 1967 3 27 2 3 -1 -1 -1 -1 -1 -1 493.TIF 1968 3 4 7 -1 -1 -1 -1 -1 -1 -1 520.TIF 1968 3 11 6 -1 -1 -1 -1 -1 -1 -1 497.TIF (90% ICE COVER) 1968 3 18 5 -1 -1 -1 -1 -1 -1 -1 498.TIF (50% ICE COVER) 1969 2 24 6 -1 -1 -1 -1 -1 -1 -1 503.TIF (80% ICE COVER) 1969 3 3 6 -1 -1 -1 -1 -1 -1 -1 504.TIF (60% ICE COVER) 1969 3 10 7 -1 -1 -1 -1 -1 -1 -1 505.TIF (50% ICE COVER) 1969 3 17 7 -1 -1 -1 -1 -1 -1 -1 506.TIF (50% ICE COVER) 1969 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 507.TIF 1970 3 3 7 -1 -1 -1 -1 -1 -1 -1 518.TIF (90% ICE COVER) 1970 3 10 8 -1 -1 -1 -1 -1 -1 -1 511.TIF (30% ICE COVER) 1970 3 17 8 -1 -1 -1 -1 -1 -1 -1 512.TIF (30% ICE COVER) 1970 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 513.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.