GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 027, Approximate Location: 47.40 N. Latitude, 87.70 W. Longitude Site Name Keweenaw on Lake Superior ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1908 3 24 -1 -1 FD -1 -1 -1 -1 -1 -1 060.TIF EAST OF POINT 1939 3 13 -1 -1 DI -1 -1 -1 -1 -1 -1 269.TIF TO 1Mi OUT IN UPPER WATERWAY 1939 3 27 -1 -1 DI -1 -1 SL -1 -1 WI -1 -1 271.TIF UPPER ENTRANCE OF WATERWAY 1939 4 10 -1 -1 SW -1 -1 -1 -1 -1 -1 273.TIF WATERWAY 1939 4 17 -1 -1 SW -1 -1 -1 -1 -1 -1 274.TIF WATERWAY 1943 3 15 -1 -1 SW -1 -1 -1 -1 -1 -1 300.TIF 10 TO 20Mi WESTWARD 1943 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 302.TIF TO MICHIGAN CITY 1947 3 17 10 -1 -1 -1 -1 -1 -1 -1 328.TIF LOWER ENTRANCE 1947 3 17 12 26 -1 -1 -1 -1 -1 -1 328.TIF RIVER 1948 3 29 2 10 RT -1 -1 -1 -1 -1 -1 338.TIF RIVER 1948 4 5 -1 -1 RT -1 -1 SW -1 -1 -1 -1 339.TIF RIVER 1949 3 21 -1 -1 FD -1 -1 -1 -1 -1 -1 345.TIF TO 40Mi OUT EAST FROM PENINSUL 1950 2 27 -1 -1 IP -1 -1 BV -1 -1 -1 -1 349.TIF LAKE 1952 3 17 -1 -1 FD -1 -1 PI -1 -1 -1 -1 370.TIF S SHORE OF PENINSULA 1953 3 23 -1 -1 DI -1 -1 -1 -1 -1 -1 379.TIF NW OF PENINSULA 1954 3 1 -1 -1 DI -1 -1 BV -1 -1 -1 -1 381.TIF LAKE 1955 2 28 -1 -1 SO -1 -1 -1 -1 -1 -1 389.TIF PENINSULA: TO MARQUETTE 1960 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 437.TIF 20 TO 30Mi OUT FROM PENINSULA 1962 2 26 -1 -1 IP -1 -1 -1 -1 -1 -1 447.TIF PENINSULA: TO ISLE ROYALE 1967 3 27 -1 -1 WT -1 -1 -1 -1 -1 -1 493.TIF JUST E OF PENINSULA 1968 4 15 -1 -1 WI -1 -1 -1 -1 -1 -1 502.TIF W SIDE OF PENINSULA 1970 3 24 -1 -1 FD -1 -1 SO -1 -1 -1 -1 513.TIF PENINSULA: TO APOSTLE ISLANDS ---------------------------------------------------------------------------------------------------------- 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.