GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 486, Approximate Location: 45.44 N. Latitude, 73.50 W. Longitude Site Name Montreal Harbor on St. Lawrence River ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1963 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 459.TIF 1963 3 18 -1 -1 FS -1 -1 -1 -1 -1 -1 459.TIF SEAWAY ENTRANCE 1964 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 467.TIF 1964 3 16 -1 -1 OW -1 -1 -1 -1 -1 -1 468.TIF 1964 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 469.TIF 1965 2 23 -1 -1 IJ -1 -1 -1 -1 -1 -1 473.TIF W END OF HARBOR 1965 3 1 -1 -1 CL -1 -1 -1 -1 -1 -1 474.TIF CANAL ENTRANCE 1965 3 1 -1 -1 IJ -1 -1 -1 -1 -1 -1 474.TIF W END 1965 3 8 -1 -1 IJ -1 -1 RT -1 -1 -1 -1 475.TIF W HARBOR: NEXT TO SEAWAY ENTRY 1965 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 476.TIF 1965 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 476.TIF CANAL ENTRANCE 1965 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 477.TIF 1966 2 28 -1 -1 OW -1 -1 -1 -1 -1 -1 483.TIF 1966 3 7 -1 -1 OW -1 -1 -1 -1 -1 -1 484.TIF 1967 3 6 -1 -1 PN -1 -1 -1 -1 -1 -1 490.TIF 1967 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 491.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 1967 4 3 -1 -1 OW -1 -1 -1 -1 -1 -1 494.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.