GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 093, Approximate Location: 46.44 N. Latitude, 84.51 W. Longitude Site Name Round Island (STM) on St. Marys River ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1903 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 028.TIF 1914 4 14 -1 -1 OW -1 -1 -1 -1 -1 -1 104.TIF UPPER ROUND ISLAND 1915 4 6 -1 -1 OW -1 -1 -1 -1 -1 -1 110.TIF TO NINE MILE POINT 1916 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 119.TIF TO SIX MILE POINT 1920 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 143.TIF TO BRUSH POINT 1920 4 6 -1 -1 OW -1 -1 -1 -1 -1 -1 144.TIF TO NINE MILE POINT 1932 3 8 6 -1 -1 -1 -1 -1 -1 -1 215.TIF 1941 3 3 8 -1 -1 -1 -1 -1 -1 -1 285.TIF 1943 4 12 -1 -1 OW -1 -1 -1 -1 -1 -1 304.TIF TO SIX MILE POINT 1948 3 22 -1 -1 RT -1 -1 NS -1 -1 -1 -1 337.TIF 1950 3 27 23 30 -1 -1 -1 -1 -1 -1 353.TIF 1950 4 10 19 27 -1 -1 -1 -1 -1 -1 355.TIF 1951 3 12 -1 -1 OW -1 -1 -1 -1 -1 -1 361.TIF TO POINT LOUISE 1952 3 10 19 -1 -1 -1 -1 -1 -1 -1 369.TIF 1952 3 19 15 -1 -1 -1 -1 -1 -1 -1 370.TIF 1952 3 31 -1 -1 SW -1 -1 -1 -1 -1 -1 372.TIF CHANNEL 1956 3 12 -1 -1 SW -1 -1 -1 -1 -1 -1 401.TIF 1958 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 418.TIF 1958 3 17 18 20 FD -1 -1 FS -1 -1 CL -1 -1 419.TIF TO LOCKS 1959 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 427.TIF CHANNEL: TO SOO 1959 3 29 16 18 -1 -1 -1 -1 -1 -1 385.TIF 1959 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 429.TIF CHANNEL: TO LOCKS 1959 4 6 -1 -1 LI -1 -1 -1 -1 -1 -1 430.TIF TO SOO LOCKS 1961 3 27 -1 -1 LI -1 -1 -1 -1 -1 -1 444.TIF CHANNEL: TO LOCKS 1962 2 26 6 -1 CL -1 -1 SC 8 -1 -1 -1 447.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.