GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 220, Approximate Location: 45.90 N. Latitude, 85.56 W. Longitude Site Name Lansing Shoal on Lake Michigan ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1942 3 30 -1 -1 DI -1 -1 -1 -1 -1 -1 295.TIF 1944 3 6 -1 -1 IP -1 -1 BV -1 -1 -1 -1 308.TIF 1944 3 13 -1 -1 HF -1 -1 -1 -1 -1 -1 309.TIF 1944 3 27 -1 -1 SW -1 -1 -1 -1 -1 -1 311.TIF WESTWARD 1944 4 17 -1 -1 IP -1 -1 -1 -1 -1 -1 314.TIF 1945 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 315.TIF 1947 2 24 -1 -1 IP -1 -1 -1 -1 -1 -1 324.TIF 11Mi WEST 1947 3 17 -1 -1 OW -1 -1 -1 -1 -1 -1 328.TIF WESTWARD 1947 3 17 -1 -1 OW -1 -1 -1 -1 -1 -1 328.TIF TO BEYOND MANISTIQUE 1947 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 331.TIF THROUGH NORTH ABOUT PASSAGE 1947 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 331.TIF TO GULL ISLAND 1948 3 29 -1 -1 SW -1 -1 -1 -1 -1 -1 338.TIF WESTWARD 1949 2 28 -1 -1 FD -1 -1 -1 -1 -1 -1 526.TIF 1950 3 6 -1 -1 WI -1 -1 BV -1 -1 -1 -1 350.TIF WESTWARD 1950 3 13 -1 -1 WI -1 -1 -1 -1 -1 -1 351.TIF 1950 3 27 -1 -1 WI -1 -1 BV -1 -1 -1 -1 353.TIF TO THE W & SW 1950 4 3 -1 -1 HF -1 -1 RT -1 -1 -1 -1 354.TIF TO WHITE SHOAL 1950 4 10 -1 -1 HF -1 -1 DI -1 -1 -1 -1 355.TIF EASTWARD 1950 4 10 -1 -1 LI -1 -1 -1 -1 -1 -1 355.TIF THROUGH ST. MARTINS PASSAGE 1950 4 17 -1 -1 IJ -1 -1 -1 -1 -1 -1 356.TIF 1950 4 24 -1 -1 IP -1 -1 -1 -1 -1 -1 357.TIF 1951 3 5 -1 -1 HF -1 -1 -1 -1 -1 -1 360.TIF 8Mi WEST OF LIGHT 1951 3 19 12 -1 RT -1 -1 -1 -1 -1 -1 362.TIF EAST: TOWARD STRAITS 1951 3 26 2 -1 NI -1 -1 DI -1 -1 -1 -1 363.TIF 1951 3 26 -1 -1 PN -1 -1 PI -1 -1 -1 -1 363.TIF 8Mi WEST 1951 4 2 -1 -1 FD 6 12 CL -1 -1 SW -1 -1 364.TIF 1952 3 17 -1 -1 LI -1 -1 -1 -1 -1 -1 370.TIF LAKE: WESTWARD 1952 3 31 -1 -1 HF -1 -1 WI -1 -1 PN -1 -1 372.TIF 1956 2 27 -1 -1 IP -1 -1 -1 -1 -1 -1 397.TIF EAST OF SHOAL 1956 4 9 -1 -1 BK -1 -1 RT -1 -1 -1 -1 405.TIF 1957 3 25 10 36 FD -1 -1 WI -1 -1 -1 -1 413.TIF TO WHITE SHOAL 1959 4 6 12 24 -1 -1 -1 -1 -1 -1 430.TIF 1959 4 6 -1 -1 LI -1 -1 -1 -1 -1 -1 430.TIF TO PORT INLAND BW 1960 4 4 -1 -1 DI -1 -1 -1 -1 -1 -1 438.TIF 1961 3 13 -1 -1 RT -1 -1 BI -1 -1 PN -1 -1 442.TIF TO WHITE SHOAL: (30% ICE COVER 1961 3 13 -1 -1 RT -1 -1 BI -1 -1 -1 -1 442.TIF TO SUMMER ISLAND (20% ICE COVE 1962 3 19 10 30 FS -1 -1 CL -1 -1 WI -1 18 450.TIF 0 TO BRIDGE 1963 3 4 6 24 FD -1 -1 FS -1 -1 WI -1 -1 457.TIF TO FRANKFORT 1963 4 8 10 20 DI -1 -1 RT -1 -1 PN -1 -1 462.TIF TO 8Mi SW ON LCA TRACK 1964 3 23 12 -1 DI -1 -1 -1 -1 -1 -1 469.TIF 1967 4 10 6 12 DI -1 -1 RT -1 -1 -1 -1 495.TIF EAST OF SHOAL (60% ICE COVER) 1969 2 24 -1 -1 FS -1 -1 -1 -1 -1 -1 503.TIF EASTWARD ---------------------------------------------------------------------------------------------------------- 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.