GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 017, Approximate Location: 48.23 N. Latitude, 89.30 W. Longitude Site Name Welcome Island on Lake Superior ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1930 4 1 17 -1 -1 -1 -1 -1 -1 -1 206.TIF TO THUNDER CAPE 1935 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 241.TIF 1938 4 4 -1 -1 SW -1 -1 -1 -1 -1 -1 265.TIF 1938 4 4 34 -1 -1 -1 -1 -1 -1 -1 265.TIF HARBOR 1939 4 10 40 -1 -1 -1 -1 -1 -1 -1 273.TIF 1939 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 274.TIF 8Mi OUT 1940 3 18 -1 -1 SW -1 -1 -1 -1 -1 -1 279.TIF TO ANGUS ISLAND 1941 3 24 22 28 BK -1 -1 -1 -1 -1 -1 288.TIF 1943 3 29 31 34 -1 -1 -1 -1 -1 -1 302.TIF 2Mi EAST 1944 3 20 -1 -1 OW -1 -1 -1 -1 -1 -1 310.TIF TO 10Mi EASTWARD 1944 3 20 -1 -1 SW -1 -1 -1 -1 -1 -1 310.TIF 10Mi SOUTHEASTWARD 1944 3 20 8 -1 NI -1 -1 -1 -1 -1 -1 310.TIF 1944 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 314.TIF CHANNEL: 5Mi EAST TO BREAKWATE 1946 4 1 -1 -1 HF -1 -1 -1 -1 -1 -1 322.TIF 1949 3 7 -1 -1 OW -1 -1 -1 -1 -1 -1 341.TIF NEAR ISLAND 1953 3 16 -1 -1 FD -1 -1 DI -1 -1 -1 -1 378.TIF TO 16Mi OUT 1954 4 19 -1 -1 HF -1 -1 -1 -1 -1 -1 388.TIF 2Mi N TO UPPER END THUNDER CAP 1955 3 28 -1 -1 SO -1 -1 -1 -1 -1 -1 395.TIF TO LAKE HEAD 1957 2 25 -1 -1 SO -1 -1 -1 -1 -1 -1 407.TIF FROM 3Mi EAST TO THUNDER CAPE 1957 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 414.TIF BEYOND ISLAND 1958 3 24 19 -1 -1 -1 -1 -1 -1 -1 420.TIF 1960 4 4 36 -1 -1 -1 -1 -1 -1 -1 438.TIF 1964 3 16 -1 -1 SW -1 -1 -1 -1 -1 -1 468.TIF TO THUNDER CAPE 1964 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 469.TIF TO PIE ISLAND 1964 4 6 -1 -1 BK -1 -1 -1 -1 -1 -1 471.TIF CHANNEL: S TO KAM-MISSION (CUT 1966 3 14 -1 -1 SW -1 -1 -1 -1 -1 -1 485.TIF S OF ISLAND ---------------------------------------------------------------------------------------------------------- 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.