GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 054, Approximate Location: 46.75 N. Latitude, 92.09 W. Longitude Site Name Superior Harbor on Lake Superior ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1908 3 24 22 -1 SC 4 -1 -1 -1 -1 -1 060.TIF 1908 3 31 22 -1 SC -1 -1 -1 -1 -1 -1 524.TIF 1909 4 13 12 -1 RT -1 -1 -1 -1 -1 -1 070.TIF 1914 4 21 -1 -1 IP -1 -1 -1 -1 -1 -1 105.TIF AROUND THE DOCKS 1934 4 24 14 -1 -1 -1 -1 -1 -1 -1 235.TIF 1935 3 26 12 20 -1 -1 -1 -1 -1 -1 240.TIF 1935 4 2 20 -1 -1 -1 -1 -1 -1 -1 241.TIF 1935 4 9 16 -1 -1 -1 -1 -1 -1 -1 242.TIF 1935 4 16 -1 -1 RT -1 -1 -1 -1 -1 -1 243.TIF 1938 3 28 13 -1 -1 -1 -1 -1 -1 -1 264.TIF 1939 4 24 -1 -1 SW -1 -1 -1 -1 -1 -1 275.TIF 1940 3 18 23 -1 -1 -1 -1 -1 -1 -1 279.TIF 1941 3 3 18 -1 -1 -1 -1 -1 -1 -1 285.TIF 1941 4 14 -1 -1 BK -1 -1 -1 -1 -1 -1 291.TIF 1942 3 30 -1 -1 BK -1 -1 -1 -1 -1 -1 295.TIF 1944 3 6 11 -1 -1 -1 -1 -1 -1 -1 308.TIF 1944 3 13 1 -1 -1 -1 -1 -1 -1 -1 309.TIF 1944 3 20 14 -1 -1 -1 -1 -1 -1 -1 310.TIF 1944 3 27 14 26 BK -1 -1 -1 -1 -1 -1 311.TIF (TWO LANES CUT) 1944 4 3 14 -1 -1 -1 -1 -1 -1 -1 312.TIF 1944 4 17 -1 -1 PI -1 -1 -1 -1 -1 -1 314.TIF 1944 4 17 -1 -1 BK -1 -1 -1 -1 -1 -1 314.TIF ENTRY 1945 3 19 11 -1 -1 -1 -1 -1 -1 -1 315.TIF 1946 3 4 27 -1 -1 -1 -1 -1 -1 -1 318.TIF IN SLIPS 1946 3 11 24 -1 -1 -1 -1 -1 -1 -1 319.TIF 1946 3 11 25 -1 -1 -1 -1 -1 -1 -1 319.TIF IN SLIPS 1946 3 18 22 23 -1 -1 -1 -1 -1 -1 320.TIF AND DOCKS 1946 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 320.TIF CHANNEL ENTRY 1946 3 25 20 -1 -1 -1 -1 -1 -1 -1 321.TIF 1946 3 25 18 -1 -1 -1 -1 -1 -1 -1 321.TIF SLIPS AND DOCKS 1946 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 322.TIF 1946 4 1 18 -1 RT -1 -1 -1 -1 -1 -1 322.TIF IN SLIPS 1946 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 323.TIF 1946 4 8 -1 -1 RT -1 -1 SI -1 -1 -1 -1 323.TIF IN SLIPS 1947 3 10 18 -1 -1 -1 -1 -1 -1 -1 327.TIF 1947 3 17 19 -1 -1 -1 -1 -1 -1 -1 328.TIF 1948 3 15 17 -1 -1 -1 -1 -1 -1 -1 336.TIF 1948 3 15 19 -1 -1 -1 -1 -1 -1 -1 336.TIF AT DOCKS 1948 3 22 17 -1 WT -1 -1 SC -1 -1 -1 -1 337.TIF TO 10Mi OUT 1948 4 12 -1 -1 BK -1 -1 -1 -1 -1 -1 340.TIF BASIN 1949 3 7 13 17 WT -1 -1 RT -1 -1 -1 -1 341.TIF 1949 3 14 15 17 SO -1 -1 CL -1 -1 -1 -1 343.TIF 1949 3 14 16 27 -1 -1 -1 -1 -1 -1 343.TIF IN SLIPS 1949 3 21 16 27 -1 -1 -1 -1 -1 -1 345.TIF 1950 5 1 -1 -1 FD -1 -1 WI -1 -1 -1 -1 358.TIF ENTRANCE TO FRENCH RIVER 1951 2 26 28 32 SC 4 12 WT -1 -1 -1 -1 359.TIF 1951 3 19 24 28 SC 6 -1 -1 -1 -1 -1 362.TIF 1951 4 9 10 30 DI -1 -1 PN -1 -1 -1 -1 365.TIF 1951 4 16 -1 -1 BK -1 -1 -1 -1 -1 -1 366.TIF BASIN 1952 2 25 -1 -1 OW -1 -1 -1 -1 -1 -1 367.TIF ENTRY 1952 3 17 20 -1 -1 -1 -1 -1 -1 -1 370.TIF CHANNEL 1952 3 17 22 -1 -1 -1 -1 -1 -1 -1 370.TIF IN SLIPS 1952 3 24 20 -1 -1 -1 -1 -1 -1 -1 371.TIF IN SLIPS 1952 3 24 19 -1 -1 -1 -1 -1 -1 -1 371.TIF CHANNEL 1953 2 24 15 -1 -1 -1 -1 -1 -1 -1 375.TIF 1953 3 2 20 -1 SC 6 -1 -1 -1 -1 -1 528.TIF 1953 3 2 16 -1 SC 6 -1 -1 -1 -1 -1 528.TIF IN SLIPS 1953 3 9 10 26 -1 -1 -1 -1 -1 -1 376.TIF 1953 3 9 20 -1 -1 -1 -1 -1 -1 -1 376.TIF IN SLIPS 1953 3 9 16 -1 -1 -1 -1 -1 -1 -1 376.TIF IN CHANNELS 1954 3 1 15 -1 SC 4 -1 -1 -1 -1 -1 381.TIF IN SLIPS 1954 3 1 10 14 -1 -1 -1 -1 -1 -1 381.TIF 1954 3 8 8 15 -1 -1 -1 -1 -1 -1 382.TIF IN SLIPS 1954 3 8 8 15 -1 -1 -1 -1 -1 -1 382.TIF 1954 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 382.TIF ENTRY 1954 3 15 8 15 -1 -1 -1 -1 -1 -1 383.TIF IN SLIPS 1954 3 15 8 15 DI -1 -1 -1 -1 -1 -1 383.TIF 1954 3 22 8 15 BK -1 -1 SC -1 -1 SL -1 -1 384.TIF 1954 3 29 8 15 -1 -1 -1 -1 -1 -1 385.TIF 1954 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 386.TIF ENTRY 1954 4 5 8 16 -1 -1 -1 -1 -1 -1 386.TIF IN SLIPS 1954 4 12 -1 -1 RT -1 -1 -1 -1 -1 -1 387.TIF IN SLIPS 1954 4 12 -1 -1 DI -1 -1 -1 -1 -1 -1 387.TIF 1954 4 19 -1 -1 OW -1 -1 BV -1 -1 -1 -1 388.TIF 1955 2 28 19 21 -1 -1 -1 -1 -1 -1 389.TIF 1955 2 28 23 25 -1 -1 -1 -1 -1 -1 389.TIF IN SLIPS 1955 3 7 23 25 SC 9 12 -1 -1 -1 -1 391.TIF IN SLIPS 1955 3 7 20 25 -1 -1 -1 -1 -1 -1 391.TIF 1955 3 14 20 22 CL -1 -1 -1 -1 -1 -1 393.TIF IN SLIPS 1955 3 21 19 24 CL -1 -1 SC 3 6 -1 -1 394.TIF IN SLIPS 1955 3 21 19 24 CL -1 -1 SC 3 6 -1 -1 394.TIF 1955 3 28 18 24 SC 3 -1 -1 -1 -1 -1 395.TIF IN SLIPS 1955 3 28 18 24 SC 3 -1 -1 -1 -1 -1 395.TIF 1955 4 11 2 4 RT -1 -1 -1 -1 -1 -1 396.TIF IN SLIPS 1955 4 11 -1 -1 RT -1 -1 PN -1 -1 -1 -1 396.TIF 1955 4 11 -1 -1 OW -1 -1 -1 -1 -1 -1 396.TIF ENTRANCE 1956 2 27 11 22 CL -1 -1 SC -1 -1 -1 -1 397.TIF IN SLIPS 1956 2 27 -1 -1 OW -1 -1 -1 -1 -1 -1 397.TIF ENTRY 1956 3 5 12 22 CL -1 -1 SC -1 -1 -1 -1 399.TIF 1956 3 5 22 30 CL -1 -1 SC -1 -1 -1 -1 399.TIF IN SLIPS 1956 3 12 10 30 CL -1 -1 SC -1 -1 -1 -1 401.TIF AND IN SLIPS 1956 3 19 10 30 -1 -1 -1 -1 -1 -1 402.TIF AND SLIPS 1956 3 26 7 22 RT -1 -1 -1 -1 -1 -1 403.TIF IN SLIPS 1956 4 2 14 -1 SC 4 -1 -1 -1 -1 -1 404.TIF (CUT) 1956 4 2 -1 -1 RT -1 -1 -1 -1 -1 -1 404.TIF IN SLIPS 1956 4 9 -1 -1 OW -1 -1 -1 -1 -1 -1 405.TIF HARBOR BASIN 1956 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 406.TIF 1957 3 4 23 -1 -1 -1 -1 -1 -1 -1 409.TIF HARBOR BASIN 1957 3 11 24 -1 RT -1 -1 -1 -1 -1 -1 411.TIF 1957 3 11 -1 -1 SO -1 -1 -1 -1 -1 -1 411.TIF BASIN 1957 4 1 -1 -1 BI -1 -1 -1 -1 -1 -1 414.TIF 1957 4 15 18 -1 RT -1 -1 -1 -1 -1 -1 415.TIF 1958 2 24 -1 -1 SO -1 -1 -1 -1 -1 -1 416.TIF 1958 3 3 -1 -1 SO -1 -1 WI -1 -1 -1 -1 417.TIF 1958 3 31 4 12 -1 -1 -1 -1 -1 -1 421.TIF 1958 3 31 4 -1 RT -1 -1 -1 -1 -1 -1 421.TIF LOWER BASIN 1958 3 31 12 -1 -1 -1 -1 -1 -1 -1 421.TIF UPPER BASIN 1958 4 14 -1 -1 OW -1 -1 -1 -1 -1 -1 423.TIF 1958 4 14 -1 -1 RT -1 -1 -1 -1 -1 -1 423.TIF IN SLIPS 1959 3 2 25 30 -1 -1 -1 -1 -1 -1 424.TIF GREAT NORTHERN DOCKS: SLIPS 1959 3 9 30 -1 CL -1 -1 -1 -1 -1 -1 425.TIF 1959 3 9 25 29 -1 -1 -1 -1 -1 -1 425.TIF IN SLIPS 1959 3 16 30 -1 -1 -1 -1 -1 -1 -1 426.TIF 1959 3 16 24 27 -1 -1 -1 -1 -1 -1 426.TIF GREAT NORTHERN DOCK: IN SLIPS 1959 3 23 30 -1 RT -1 -1 -1 -1 -1 -1 427.TIF 1959 3 23 23 27 -1 -1 -1 -1 -1 -1 427.TIF BETWEEN GREAT NORTHERN DOCKS 1959 3 30 22 24 RT -1 -1 -1 -1 -1 -1 429.TIF 1959 3 30 21 23 RT -1 -1 -1 -1 -1 -1 429.TIF BETWEEN DOCKS 1959 4 6 -1 -1 LI -1 -1 -1 -1 -1 -1 430.TIF 1960 2 29 15 -1 -1 -1 -1 -1 -1 -1 522.TIF BETWEEN GREAT NORTHERN DOCKS 1960 3 7 19 -1 -1 -1 -1 -1 -1 -1 434.TIF TO 7Mi OUT 1960 3 7 16 18 -1 -1 -1 -1 -1 -1 434.TIF GREAT NORTHERN DOCKS 1960 3 14 16 18 IP -1 -1 BV -1 -1 -1 -1 435.TIF 1960 3 21 19 -1 SC 2 -1 -1 -1 -1 -1 436.TIF 1960 3 21 14 18 RT -1 -1 -1 -1 -1 -1 436.TIF GREAT NORTHERN DOCKS 1960 3 28 19 -1 -1 -1 -1 -1 -1 -1 437.TIF 1960 3 28 16 18 -1 -1 -1 -1 -1 -1 437.TIF GREAT NORTHERN DOCKS 1960 4 4 -1 -1 FS -1 -1 RT -1 -1 -1 -1 438.TIF (70% ICE COVER) 1961 2 27 24 -1 -1 -1 -1 -1 -1 -1 440.TIF 1961 2 27 24 -1 WI -1 -1 -1 -1 -1 -1 440.TIF LAKE SIDE 1961 2 27 29 -1 -1 -1 -1 -1 -1 -1 440.TIF GREAT NORTHERN DOCKS 1961 3 6 22 -1 RT -1 -1 -1 -1 -1 -1 441.TIF 1961 3 6 10 -1 SW -1 -1 -1 -1 -1 -1 441.TIF LAKE SIDE (50% ICE COVER) 1961 3 6 28 -1 -1 -1 -1 -1 -1 -1 441.TIF GREAT NORTHERN DOCKS 1961 3 13 18 -1 SO -1 -1 WI -1 -1 -1 -1 442.TIF 1961 3 13 28 30 -1 -1 -1 -1 -1 -1 442.TIF GREAT NORTHERN DOCKS 1961 3 20 20 -1 -1 -1 -1 -1 -1 -1 443.TIF 1961 3 27 15 -1 FS -1 -1 SI -1 -1 RT -1 -1 444.TIF IN BASIN 1961 3 27 -1 -1 NS -1 -1 -1 -1 -1 -1 444.TIF GREAT NORTHERN DOCKS 1961 4 3 5 12 RT -1 -1 -1 -1 -1 -1 445.TIF (50% ICE COVER) 1961 4 3 -1 -1 RT -1 -1 -1 -1 -1 -1 445.TIF GREAT NORTHERN DOCKS 1961 4 10 -1 -1 OW -1 -1 -1 -1 -1 -1 446.TIF EXCEPT IN SLIPS 1961 4 10 -1 -1 IP -1 -1 -1 -1 -1 -1 446.TIF IN SLIPS 1962 3 5 18 28 -1 -1 -1 -1 -1 -1 448.TIF INNER HARBOR 1962 3 5 36 -1 -1 -1 -1 -1 -1 -1 448.TIF FRONT CHANNEL 1962 3 12 23 30 IP -1 -1 BV -1 -1 WI -1 -1 449.TIF 1962 3 12 23 26 -1 -1 -1 -1 -1 -1 449.TIF GREAT NORTHERN DOCKS 1962 3 19 22 30 -1 -1 -1 -1 -1 -1 450.TIF 1962 3 26 20 23 -1 -1 -1 -1 -1 -1 451.TIF 1962 3 26 23 26 RT -1 -1 NS -1 -1 -1 -1 451.TIF DOCKS 1962 4 2 15 -1 FS -1 -1 SI -1 -1 BK -1 -1 452.TIF (CUT) 1962 4 2 -1 -1 NS -1 -1 -1 -1 -1 -1 452.TIF DOCKS 1962 4 9 12 -1 FS -1 -1 SI -1 -1 -1 -1 453.TIF 1963 2 25 22 33 -1 -1 -1 -1 -1 -1 456.TIF 1963 3 4 36 -1 -1 -1 -1 -1 -1 -1 457.TIF 1963 3 11 26 36 -1 -1 -1 -1 -1 -1 458.TIF 1963 3 11 22 33 -1 -1 -1 -1 -1 -1 458.TIF GREAT NORTHERN DOCKS 1963 3 18 27 32 -1 -1 -1 -1 -1 -1 459.TIF 1963 3 25 30 34 -1 -1 -1 -1 -1 -1 460.TIF 1963 4 1 28 33 RT -1 -1 -1 -1 -1 -1 461.TIF 1963 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 462.TIF 1963 4 8 -1 -1 RT -1 -1 NS -1 -1 -1 -1 462.TIF IN SLIPS 1963 4 15 -1 -1 FS -1 -1 -1 -1 -1 -1 463.TIF GREAT NORTHERN DOCKS 1963 4 22 -1 -1 OW -1 -1 -1 -1 -1 -1 464.TIF 1964 2 24 18 -1 -1 -1 -1 -1 -1 -1 465.TIF 1964 3 2 20 -1 SO -1 -1 -1 -1 -1 -1 466.TIF 1964 3 9 -1 -1 BK -1 -1 RT -1 -1 -1 -1 467.TIF SLIP BETWEEN DOCKS 2 & 3 1964 3 23 12 18 -1 -1 -1 -1 -1 -1 469.TIF 1964 3 30 18 -1 FS -1 -1 CL -1 -1 -1 -1 470.TIF INNER HARBOR 1964 3 30 18 -1 FS -1 -1 FD -1 -1 IJ -1 -1 470.TIF OUTER HARBOR 1964 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 470.TIF ENTRANCE 1964 3 30 -1 -1 RF -1 -1 -1 -1 -1 -1 470.TIF GREAT NORTHERN ORE DOCK #2 1965 3 15 19 25 -1 -1 -1 -1 -1 -1 476.TIF GREAT NORTHERN ORE DOCKS 1965 3 22 20 24 -1 -1 -1 -1 -1 -1 477.TIF 1965 4 5 22 32 SC 6 8 -1 -1 -1 -1 479.TIF 1965 4 12 22 32 SC -1 -1 WT -1 -1 -1 -1 480.TIF 1965 4 19 -1 -1 SO -1 -1 CL -1 -1 RT -1 -1 481.TIF 1966 2 28 15 17 -1 -1 -1 -1 -1 -1 483.TIF GREAT NORTHERN ORE DOCK #2 1966 3 7 15 17 -1 -1 -1 -1 -1 -1 484.TIF 1966 3 14 14 17 -1 -1 -1 -1 -1 -1 485.TIF IN SLIPS 1966 3 21 -1 -1 NS -1 -1 -1 -1 -1 -1 486.TIF 1966 3 28 -1 -1 NS -1 -1 -1 -1 -1 -1 487.TIF 1966 4 4 -1 -1 RT -1 -1 NS -1 -1 -1 -1 488.TIF 1967 3 6 17 -1 -1 -1 -1 -1 -1 -1 490.TIF 1967 3 13 18 20 FS -1 -1 -1 -1 -1 -1 491.TIF 1967 3 20 20 26 -1 -1 -1 -1 -1 -1 492.TIF 1967 3 27 19 31 -1 -1 -1 -1 -1 -1 493.TIF 1967 4 3 12 -1 RT -1 -1 -1 -1 -1 -1 494.TIF 1967 4 10 3 -1 DI -1 -1 -1 -1 -1 -1 495.TIF 1967 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 496.TIF 1968 3 4 22 -1 -1 -1 -1 -1 -1 -1 520.TIF 1968 3 11 18 24 -1 -1 -1 -1 -1 -1 497.TIF 1968 3 18 -1 -1 RT -1 -1 -1 -1 -1 -1 498.TIF 1968 3 25 -1 -1 RT -1 -1 -1 -1 -1 -1 499.TIF 1968 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 500.TIF 1969 2 24 30 -1 -1 -1 -1 -1 -1 -1 503.TIF 1970 3 10 22 -1 -1 -1 -1 -1 -1 -1 511.TIF 1970 3 17 17 -1 -1 -1 -1 -1 -1 -1 512.TIF 1970 3 17 22 -1 -1 -1 -1 -1 -1 -1 512.TIF GREAT NORTHERN ORE DOCK ---------------------------------------------------------------------------------------------------------- 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.