GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 344, Approximate Location: 41.88 N. Latitude, 87.61 W. Longitude Site Name Chicago Harbor on Lake Michigan ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1900 2 27 -1 -1 BK -1 -1 -1 -1 -1 -1 003.TIF 1900 3 6 -1 -1 BK -1 -1 -1 -1 -1 -1 004.TIF 1900 3 13 -1 -1 SI -1 -1 -1 -1 -1 -1 005.TIF 1901 3 5 -1 -1 OW -1 -1 -1 -1 -1 -1 011.TIF 1901 3 12 -1 -1 OW -1 -1 -1 -1 -1 -1 012.TIF 1901 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 013.TIF 1903 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 024.TIF 1906 4 3 -1 -1 IP -1 -1 -1 -1 -1 -1 049.TIF 1909 3 2 -1 -1 OW -1 -1 -1 -1 -1 -1 064.TIF 1910 3 1 4 -1 -1 -1 -1 -1 -1 -1 071.TIF 1912 3 5 -1 -1 BK -1 -1 -1 -1 -1 -1 082.TIF 1912 3 12 -1 -1 BK -1 -1 -1 -1 -1 -1 083.TIF 1916 3 28 -1 -1 SI -1 -1 -1 -1 -1 -1 116.TIF 1917 3 6 -1 -1 HF -1 -1 -1 -1 -1 -1 120.TIF 1917 3 13 -1 -1 LI -1 -1 -1 -1 -1 -1 121.TIF 1919 3 4 1 2 -1 -1 -1 -1 -1 -1 136.TIF 1920 3 9 -1 -1 IP -1 -1 -1 -1 -1 -1 140.TIF 1928 3 6 -1 -1 BK -1 -1 -1 -1 -1 -1 190.TIF 1934 3 13 -1 -1 IP -1 -1 -1 -1 -1 -1 229.TIF 1935 3 5 5 -1 -1 -1 -1 -1 -1 -1 237.TIF TO 1 & 1/2Mi OUT 1936 3 10 -1 -1 DI -1 -1 -1 -1 -1 -1 244.TIF 1936 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 244.TIF SOUTH CHICAGO 1939 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 268.TIF 1940 3 4 6 8 -1 -1 -1 -1 -1 -1 277.TIF 1940 3 18 -1 -1 BK -1 -1 -1 -1 -1 -1 279.TIF SOUTH CHICAGO 1941 3 3 5 6 -1 -1 -1 -1 -1 -1 285.TIF 1941 3 10 12 -1 -1 -1 -1 -1 -1 -1 286.TIF 1943 3 8 6 -1 -1 -1 -1 -1 -1 -1 299.TIF SOUTH CHICAGO 1943 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 299.TIF 1944 3 13 -1 -1 LI -1 -1 -1 -1 -1 -1 309.TIF 1944 3 13 -1 -1 LI -1 -1 -1 -1 -1 -1 309.TIF SOUTH CHICAGO 1947 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 327.TIF 1947 3 17 -1 -1 OW -1 -1 -1 -1 -1 -1 328.TIF 1947 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 329.TIF 1948 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 337.TIF SOUTH CHICAGO 1950 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 353.TIF 1951 2 26 2 3 -1 -1 -1 -1 -1 -1 359.TIF SOUTH HARBOR 1951 3 5 -1 -1 LI -1 -1 -1 -1 -1 -1 360.TIF 1952 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 368.TIF 1953 2 24 -1 -1 LI -1 -1 -1 -1 -1 -1 375.TIF 1953 3 2 -1 -1 OW -1 -1 -1 -1 -1 -1 528.TIF 1958 2 24 -1 -1 OW -1 -1 -1 -1 -1 -1 416.TIF 1958 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 417.TIF 1960 2 19 3 -1 DI -1 -1 PN -1 -1 -1 -1 523.TIF 1960 3 14 -1 -1 DI -1 -1 PN -1 -1 -1 -1 435.TIF (40% ICE COVER) 1960 3 21 7 -1 FD -1 -1 WI -1 -1 -1 -1 436.TIF SOUTH CHICAGO 1960 3 21 -1 -1 DI -1 -1 PN -1 -1 -1 -1 436.TIF 1960 3 28 -1 -1 SI -1 -1 RT -1 -1 PN -1 -1 437.TIF 1962 2 26 4 -1 FD -1 -1 FS -1 -1 RT -1 -1 447.TIF 1962 3 5 5 -1 -1 -1 -1 -1 -1 -1 448.TIF 1962 3 12 3 5 FD -1 -1 FS -1 -1 -1 -1 449.TIF 1963 2 25 8 -1 -1 -1 -1 -1 -1 -1 456.TIF 1963 3 4 8 -1 -1 -1 -1 -1 -1 -1 457.TIF 1964 2 24 3 -1 -1 -1 -1 -1 -1 -1 465.TIF 1964 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 467.TIF 1965 3 1 4 -1 -1 -1 -1 -1 -1 -1 474.TIF 1965 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 476.TIF 1965 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 477.TIF 1965 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 479.TIF 1967 3 6 4 6 -1 -1 -1 -1 -1 -1 490.TIF 1968 3 4 5 -1 -1 -1 -1 -1 -1 -1 520.TIF (90% ICE COVER) 1968 3 11 -1 -1 OW -1 -1 -1 -1 -1 -1 497.TIF 1968 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 498.TIF 1969 2 24 5 -1 -1 -1 -1 -1 -1 -1 503.TIF (90% ICE COVER) 1969 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 504.TIF 1969 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 505.TIF 1969 3 17 -1 -1 OW -1 -1 -1 -1 -1 -1 506.TIF 1969 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 507.TIF 1970 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 518.TIF 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.