GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 345, Approximate Location: 41.88 N. Latitude, 87.61 W. Longitude Site Name Chicago 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 RIVER 1900 2 27 -1 -1 HF -1 -1 DI -1 -1 -1 -1 003.TIF SEVERAL MILES OUT 1900 3 6 -1 -1 HF 168 180 SC -1 -1 -1 -1 004.TIF FROM BW: TO 10Mi EAST 1900 3 13 -1 -1 FD -1 -1 -1 -1 -1 -1 005.TIF TO 2Mi OUT 1900 3 13 -1 -1 DI -1 -1 -1 -1 -1 -1 005.TIF TO 15Mi OUT 1900 3 20 -1 -1 LF -1 -1 -1 -1 -1 -1 006.TIF LAKE: IN THE DISTANCE 1901 3 5 -1 -1 OW -1 -1 -1 -1 -1 -1 011.TIF LAKE 1901 3 12 -1 -1 LF -1 -1 DI -1 -1 -1 -1 012.TIF LAKE 1901 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 013.TIF LAKE 1901 3 26 -1 -1 OW -1 -1 -1 -1 -1 -1 014.TIF TO ALGONAC 1902 3 4 -1 -1 LF -1 -1 -1 -1 -1 -1 019.TIF 1902 3 11 -1 -1 OW -1 -1 -1 -1 -1 -1 020.TIF 1904 3 8 -1 -1 DI -1 -1 -1 -1 -1 -1 030.TIF 1904 3 15 -1 -1 IP -1 -1 -1 -1 -1 -1 031.TIF 1904 3 22 -1 -1 IP -1 -1 -1 -1 -1 -1 032.TIF 1904 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 033.TIF 1904 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 034.TIF 1904 4 19 -1 -1 OW -1 -1 -1 -1 -1 -1 036.TIF 1905 3 7 -1 -1 OW -1 -1 -1 -1 -1 -1 039.TIF 1906 3 20 -1 -1 BK -1 -1 -1 -1 -1 -1 047.TIF 1906 3 27 -1 -1 IP -1 -1 -1 -1 -1 -1 048.TIF 1906 4 3 -1 -1 OW -1 -1 -1 -1 -1 -1 049.TIF OUTSIDE THE BW 1907 3 5 -1 -1 OW -1 -1 -1 -1 -1 -1 051.TIF LAKE 1908 3 3 -1 -1 FD -1 -1 BK -1 -1 -1 -1 057.TIF LAKE: 2Mi OUT 1909 3 2 -1 -1 DI -1 -1 -1 -1 -1 -1 064.TIF LAKE 1910 3 1 -1 -1 FD -1 -1 -1 -1 -1 -1 071.TIF LAKE 1912 3 5 -1 -1 FD -1 -1 -1 -1 -1 -1 082.TIF LAKE 1912 3 12 -1 -1 FD -1 -1 -1 -1 -1 -1 083.TIF 1912 3 19 -1 -1 FD -1 -1 -1 -1 -1 -1 084.TIF 1912 3 26 -1 -1 HF -1 -1 -1 -1 -1 -1 085.TIF LAKE 1912 4 2 -1 -1 IP -1 -1 -1 -1 -1 -1 086.TIF 1912 4 9 -1 -1 OW -1 -1 -1 -1 -1 -1 087.TIF 1913 3 4 -1 -1 DI -1 -1 -1 -1 -1 -1 090.TIF INSIDE BW 1913 3 4 -1 -1 OW -1 -1 -1 -1 -1 -1 090.TIF LAKE 1913 3 11 -1 -1 FD -1 -1 -1 -1 -1 -1 091.TIF 1914 3 3 -1 -1 DI -1 -1 -1 -1 -1 -1 098.TIF LAKE 1915 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 106.TIF 1916 3 7 -1 -1 HF -1 -1 -1 -1 -1 -1 113.TIF LAKE 1916 4 4 -1 -1 IP -1 -1 -1 -1 -1 -1 117.TIF SHORE 1917 3 6 -1 -1 HF -1 -1 -1 -1 -1 -1 120.TIF 1917 3 13 -1 -1 FD -1 -1 -1 -1 -1 -1 121.TIF LAKE 1918 3 5 -1 -1 OW -1 -1 -1 -1 -1 -1 128.TIF 1919 3 4 -1 -1 DI -1 -1 -1 -1 -1 -1 136.TIF LAKE: BEYOND THE BW 1919 3 11 -1 -1 FD -1 -1 BK -1 -1 DI -1 -1 137.TIF LAKE: BEYOND THE BW 1920 3 9 -1 -1 HF -1 -1 -1 -1 -1 -1 140.TIF LAKE 1920 3 16 -1 -1 OW -1 -1 -1 -1 -1 -1 141.TIF 1924 3 4 -1 -1 FD -1 -1 -1 -1 -1 -1 163.TIF 1924 3 11 -1 -1 LI -1 -1 -1 -1 -1 -1 164.TIF 1934 3 6 -1 -1 IP -1 -1 -1 -1 -1 -1 228.TIF TO 12Mi OUT 1934 3 13 -1 -1 IP -1 -1 -1 -1 -1 -1 229.TIF OFF SOUTH CHICAGO 1935 3 12 -1 -1 IP -1 -1 BV -1 -1 -1 -1 238.TIF SOUTH CHICAGO 1940 3 4 -1 -1 DI -1 -1 BV -1 -1 -1 -1 277.TIF 1940 3 24 -1 -1 IP -1 -1 -1 -1 -1 -1 280.TIF 1941 3 3 -1 -1 SI -1 -1 DI -1 -1 BV -1 -1 285.TIF 1941 3 10 -1 -1 DI -1 -1 -1 -1 -1 -1 286.TIF TO 1Mi OUT 1947 3 3 -1 -1 LI -1 -1 -1 -1 -1 -1 326.TIF TO WHITING 1950 3 6 3 6 -1 -1 -1 -1 -1 -1 350.TIF 1951 2 26 -1 -1 FD -1 -1 SI -1 -1 -1 -1 359.TIF LAKE 1953 3 2 -1 -1 OW -1 -1 -1 -1 -1 -1 528.TIF LAKE 1958 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 417.TIF 1960 3 14 4 -1 FD -1 -1 WI 48 -1 -1 -1 435.TIF LAKE 1960 3 21 8 -1 FD -1 -1 FS -1 -1 WI -1 -1 436.TIF TO 1/2Mi OUT FROM SOUTH HARBOR 1960 3 21 -1 -1 FD -1 -1 IJ -1 -1 WI 18 -1 436.TIF OUTSIDE OF BW: TO 1 & 1/2Mi OU 1962 3 5 -1 -1 FD -1 -1 FS -1 -1 WI 3 4 448.TIF 8 LAKE: TO 17Mi EAST 1963 2 25 2 -1 -1 -1 -1 -1 -1 -1 456.TIF JACKSON PARK HARBOR 1963 3 4 6 -1 -1 -1 -1 -1 -1 -1 457.TIF JACKSON PARK HARBOR 1963 3 11 -1 -1 LI -1 -1 -1 -1 -1 -1 458.TIF 1966 2 28 4 -1 DI -1 -1 -1 -1 -1 -1 483.TIF TO 2Mi OUT 1966 2 28 -1 -1 -1 -1 -1 -1 -1 -1 483.TIF CHANNEL (70% ICE COVER) 1968 2 26 2 -1 -1 -1 -1 -1 -1 -1 521.TIF (30% ICE COVER) 1969 3 3 -1 -1 WI -1 -1 -1 -1 -1 -1 504.TIF 1969 3 10 -1 -1 WI -1 -1 -1 -1 -1 -1 505.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.