GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 346, Approximate Location: 41.73 N. Latitude, 87.52 W. Longitude Site Name Calumet Harbor on Lake Michigan ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1940 3 11 14 18 HF -1 -1 DI -1 -1 WI -1 -1 278.TIF TO GARY 1940 3 18 -1 -1 HF -1 -1 WI -1 -1 -1 -1 279.TIF TO 5Mi OUT 1960 3 14 -1 -1 RF -1 -1 PN -1 -1 WI 1 4 435.TIF 8 1960 3 21 7 -1 FD -1 -1 WI -1 -1 -1 -1 436.TIF 1960 3 21 8 -1 FD -1 -1 FS -1 -1 WI -1 -1 436.TIF TO 1/2Mi OUT FROM HARBOR 1963 2 25 3 -1 -1 -1 -1 -1 -1 -1 456.TIF 1963 3 4 1 -1 -1 -1 -1 -1 -1 -1 457.TIF 1964 2 24 -1 -1 OW -1 -1 -1 -1 -1 -1 465.TIF 1964 3 2 1 -1 -1 -1 -1 -1 -1 -1 466.TIF 1964 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 467.TIF 1965 3 1 3 -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 6 -1 FS -1 -1 SI -1 -1 WI -1 -1 479.TIF 1967 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 490.TIF 1967 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 491.TIF 1967 3 20 -1 -1 OW -1 -1 -1 -1 -1 -1 492.TIF 1968 2 26 3 -1 -1 -1 -1 -1 -1 -1 521.TIF (70% ICE COVER) 1968 3 4 -1 -1 OW -1 -1 -1 -1 -1 -1 520.TIF 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 3 -1 -1 -1 -1 -1 -1 -1 503.TIF 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 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.