GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 458, Approximate Location: 43.65 N. Latitude, 79.45 W. Longitude Site Name Toronto Harbor on Lake Ontario ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1912 3 19 24 -1 NC -1 -1 -1 -1 -1 -1 084.TIF 1912 3 26 24 -1 -1 -1 -1 -1 -1 -1 085.TIF 1912 4 2 -1 -1 BK -1 -1 -1 -1 -1 -1 086.TIF 1912 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 086.TIF ENTRANCE 1912 4 9 16 -1 SO -1 -1 -1 -1 -1 -1 087.TIF 1912 4 9 -1 -1 OW -1 -1 -1 -1 -1 -1 087.TIF EAST END OF HARBOR 1913 3 11 20 -1 SO -1 -1 -1 -1 -1 -1 091.TIF 1913 3 18 -1 -1 RT -1 -1 NS -1 -1 -1 -1 092.TIF 1914 3 24 16 -1 -1 -1 -1 -1 -1 -1 101.TIF 1914 3 31 -1 -1 RT -1 -1 -1 -1 -1 -1 102.TIF 1914 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 103.TIF 1916 3 7 14 -1 SO -1 -1 -1 -1 -1 -1 113.TIF 1916 3 28 14 -1 SO -1 -1 -1 -1 -1 -1 116.TIF 1916 4 4 -1 -1 DI -1 -1 -1 -1 -1 -1 117.TIF 1920 3 30 16 -1 -1 -1 -1 -1 -1 -1 143.TIF 1920 4 6 -1 -1 OW -1 -1 -1 -1 -1 -1 144.TIF 1934 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 229.TIF CHANNEL 1934 3 20 -1 -1 OW -1 -1 -1 -1 -1 -1 230.TIF WEST ENTRANCE 1934 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 231.TIF 1934 4 10 -1 -1 OW -1 -1 -1 -1 -1 -1 233.TIF 1935 3 12 1 -1 -1 -1 -1 -1 -1 -1 238.TIF 1936 3 10 20 -1 -1 -1 -1 -1 -1 -1 244.TIF 1936 3 17 18 -1 -1 -1 -1 -1 -1 -1 245.TIF 1936 3 23 -1 -1 IP -1 -1 -1 -1 -1 -1 246.TIF 1937 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 254.TIF 1938 3 7 8 -1 -1 -1 -1 -1 -1 -1 261.TIF 1938 3 14 8 -1 DI -1 -1 -1 -1 -1 -1 262.TIF 1939 3 6 12 14 -1 -1 -1 -1 -1 -1 268.TIF 1939 3 13 -1 -1 IP -1 -1 -1 -1 -1 -1 269.TIF SHORE 1939 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 269.TIF 1939 3 20 1 -1 -1 -1 -1 -1 -1 -1 270.TIF 1939 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 271.TIF 1940 3 18 18 26 -1 -1 -1 -1 -1 -1 279.TIF 1940 3 24 18 26 SW -1 -1 -1 -1 -1 -1 280.TIF 1941 3 10 18 22 SO -1 -1 -1 -1 -1 -1 286.TIF EXCEPT EAST ENTRANCE 1941 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 286.TIF EAST ENTRANCE 1941 3 10 180 360 -1 -1 -1 -1 -1 -1 286.TIF ON SHORE 1941 3 17 18 20 BK -1 -1 -1 -1 -1 -1 287.TIF EXCEPT SMALL AREA WEST END 1941 3 31 -1 -1 LI -1 -1 -1 -1 -1 -1 289.TIF 1942 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 292.TIF 1942 3 16 -1 -1 OW -1 -1 -1 -1 -1 -1 293.TIF 1942 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 294.TIF 1943 3 1 -1 -1 BK -1 -1 -1 -1 -1 -1 298.TIF 1943 3 8 -1 -1 LI -1 -1 -1 -1 -1 -1 299.TIF 1943 3 15 12 -1 -1 -1 -1 -1 -1 -1 300.TIF 1943 3 22 -1 -1 LI -1 -1 -1 -1 -1 -1 301.TIF 1943 3 29 -1 -1 IP -1 -1 -1 -1 -1 -1 302.TIF IN TWO CHANNELS ONLY 1944 3 13 4 -1 -1 -1 -1 -1 -1 -1 309.TIF 1944 3 20 4 -1 BK -1 -1 -1 -1 -1 -1 310.TIF 1944 3 27 4 -1 SI -1 -1 BK -1 -1 -1 -1 311.TIF 1946 3 4 6 -1 -1 -1 -1 -1 -1 -1 318.TIF 1946 3 11 -1 -1 OW -1 -1 -1 -1 -1 -1 319.TIF 1947 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 326.TIF (CUT) 1947 3 3 14 20 -1 -1 -1 -1 -1 -1 326.TIF IN SLIPS 1947 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 329.TIF 1948 3 1 -1 -1 SI -1 -1 -1 -1 -1 -1 334.TIF 1948 3 22 14 18 BK -1 -1 -1 -1 -1 -1 337.TIF 1949 3 14 -1 -1 OW -1 -1 -1 -1 -1 -1 344.TIF 1950 3 13 2 -1 -1 -1 -1 -1 -1 -1 351.TIF 1950 3 20 -1 -1 OW -1 -1 -1 -1 -1 -1 352.TIF 1950 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 353.TIF 1952 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 369.TIF 1952 3 17 -1 -1 OW -1 -1 -1 -1 -1 -1 370.TIF 1952 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 371.TIF 1954 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 382.TIF 1955 3 7 -1 -1 LF -1 -1 -1 -1 -1 -1 392.TIF 1955 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 395.TIF EAST GAP 1956 3 5 -1 -1 OW -1 -1 -1 -1 -1 -1 400.TIF EAST GAP HARBOR 1959 3 2 -1 -1 SI -1 -1 -1 -1 -1 -1 424.TIF (80% ICE COVER) 1959 3 9 -1 -1 SI -1 -1 SW -1 -1 -1 -1 425.TIF (15% ICE COVER) 1960 2 29 -1 -1 OW -1 -1 -1 -1 -1 -1 522.TIF 1960 3 7 -1 -1 IP -1 -1 -1 -1 -1 -1 434.TIF 1960 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 437.TIF 1961 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 442.TIF 1961 3 20 -1 -1 OW -1 -1 -1 -1 -1 -1 443.TIF 1962 2 26 12 -1 FS -1 -1 -1 -1 -1 -1 447.TIF 3/4 OF BAY 1963 3 11 -1 -1 LF -1 -1 PN -1 -1 -1 -1 458.TIF 1963 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 460.TIF 1963 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 461.TIF 1964 3 2 -1 -1 OW -1 -1 -1 -1 -1 -1 466.TIF 1964 3 16 -1 -1 OW -1 -1 -1 -1 -1 -1 468.TIF 1965 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 477.TIF 1966 2 28 2 3 BI -1 -1 PI -1 -1 -1 -1 483.TIF 1967 3 6 2 4 -1 -1 -1 -1 -1 -1 490.TIF 1967 3 20 -1 -1 OW -1 -1 -1 -1 -1 -1 492.TIF 1967 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 493.TIF 1968 3 11 12 -1 -1 -1 -1 -1 -1 -1 497.TIF (10% ICE COVER) 1968 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 498.TIF 1968 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 499.TIF 1969 2 24 2 3 -1 -1 -1 -1 -1 -1 503.TIF (30% ICE COVER) 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 ---------------------------------------------------------------------------------------------------------- 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.