GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 487, Approximate Location: 45.44 N. Latitude, 73.30 W. Longitude Site Name Montreal on St. Lawrence River ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1943 4 12 -1 -1 BK -1 -1 -1 -1 -1 -1 304.TIF CHANNEL: TO QUEBEC 1966 2 28 16 -1 FS -1 -1 SC -1 -1 -1 -1 483.TIF SEAWAY ENTRANCE: TO 1Mi SOUTH 1966 3 7 -1 -1 BK -1 -1 FS -1 -1 CL -1 -1 484.TIF SEAWAY ENTRANCE (CUT) 1966 3 14 -1 -1 OW -1 -1 -1 -1 -1 -1 485.TIF EXCEPT ALONG SHORE 1966 3 14 -1 -1 IP -1 -1 RT -1 -1 -1 -1 485.TIF ALONG SHORE 1967 3 6 -1 -1 IJ -1 -1 FS -1 -1 SC -1 -1 490.TIF SEAWAY ENTRANCE 1967 3 13 -1 -1 FS -1 -1 SC -1 -1 -1 -1 491.TIF SEAWAY ENTRANCE 1967 3 20 -1 -1 IJ -1 -1 -1 -1 -1 -1 492.TIF SEAWAY CHANNEL ENTRANCE 1967 3 27 -1 -1 IJ -1 -1 -1 -1 -1 -1 493.TIF SEAWAY ENTRANCE 1967 4 3 -1 -1 OW -1 -1 -1 -1 -1 -1 494.TIF SEAWAY ENTRANCE ---------------------------------------------------------------------------------------------------------- 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.