GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 023, Approximate Location: 47.75 N. Latitude, 90.34 W. Longitude Site Name Grand Marais Harbor, MN on Lake Superior ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1914 3 20 7 -1 -1 -1 -1 -1 -1 -1 102.TIF 1917 3 6 -1 -1 SO -1 -1 -1 -1 -1 -1 120.TIF 1935 4 2 -1 -1 BK -1 -1 -1 -1 -1 -1 241.TIF 1938 3 7 3 -1 -1 -1 -1 -1 -1 -1 261.TIF 1938 3 14 0 6 -1 -1 -1 -1 -1 -1 262.TIF 1938 3 21 3 -1 -1 -1 -1 -1 -1 -1 263.TIF 1938 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 264.TIF 1939 3 6 2 8 -1 -1 -1 -1 -1 -1 268.TIF 1939 4 17 -1 -1 BK -1 -1 -1 -1 -1 -1 274.TIF 1939 4 24 -1 -1 LI -1 -1 -1 -1 -1 -1 275.TIF 1940 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 282.TIF 1940 4 15 -1 -1 OW -1 -1 -1 -1 -1 -1 283.TIF 1941 3 3 15 -1 -1 -1 -1 -1 -1 -1 285.TIF 1941 4 7 2 20 RT -1 -1 -1 -1 -1 -1 290.TIF 1942 3 23 -1 -1 BK -1 -1 SI -1 -1 -1 -1 294.TIF 1944 3 13 3 8 -1 -1 -1 -1 -1 -1 309.TIF 1944 3 27 3 8 BK -1 -1 -1 -1 -1 -1 311.TIF 1944 4 3 -1 -1 LF -1 -1 -1 -1 -1 -1 312.TIF 1944 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 314.TIF 1945 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 315.TIF 1945 3 26 -1 -1 OW -1 -1 -1 -1 -1 -1 316.TIF 1946 3 11 17 -1 -1 -1 -1 -1 -1 -1 319.TIF TO 1Mi OUT 1946 3 18 16 -1 -1 -1 -1 -1 -1 -1 320.TIF 1946 3 25 15 -1 RT -1 -1 -1 -1 -1 -1 321.TIF 1946 4 1 4 -1 BK -1 -1 -1 -1 -1 -1 322.TIF 1/4 OF HARBOR 1947 3 3 10 17 -1 -1 -1 -1 -1 -1 326.TIF 1947 3 10 19 -1 SO -1 -1 CL -1 -1 -1 -1 327.TIF EAST HALF OF BAY 1947 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 327.TIF WEST HALF OF BAY 1947 3 24 18 -1 -1 -1 -1 -1 -1 -1 329.TIF 1947 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 330.TIF 1948 3 1 18 -1 -1 -1 -1 -1 -1 -1 334.TIF 1948 3 15 14 -1 -1 -1 -1 -1 -1 -1 336.TIF 1948 3 22 10 15 RT -1 -1 -1 -1 -1 -1 337.TIF 1948 3 29 10 12 RT -1 -1 -1 -1 -1 -1 338.TIF 1948 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 338.TIF WEST HALF 1948 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 339.TIF 1949 2 28 -1 -1 OW -1 -1 BV -1 -1 -1 -1 526.TIF 1949 3 7 6 -1 -1 -1 -1 -1 -1 -1 341.TIF 1949 3 14 2 3 -1 -1 -1 -1 -1 -1 343.TIF 1949 3 21 9 10 SO -1 -1 CL -1 -1 -1 -1 345.TIF 1950 2 16 6 -1 -1 -1 -1 -1 -1 -1 348.TIF EAST HALF OF HARBOR 1950 2 16 -1 -1 OW -1 -1 -1 -1 -1 -1 348.TIF WEST HALF OF HARBOR 1950 4 3 16 18 IP -1 -1 BV -1 -1 -1 -1 354.TIF 1950 5 1 -1 -1 OW -1 -1 -1 -1 -1 -1 358.TIF 1951 2 26 22 24 -1 -1 -1 -1 -1 -1 359.TIF 1951 3 12 22 -1 WT -1 -1 NI 2 4 -1 -1 361.TIF 1951 3 19 23 -1 SO -1 -1 -1 -1 -1 -1 362.TIF 1951 3 19 -1 -1 SW -1 -1 -1 -1 -1 -1 362.TIF ENTRANCE 1951 4 2 23 -1 WT 3 -1 -1 -1 -1 -1 364.TIF 1951 4 9 24 -1 RT -1 -1 SL -1 -1 SW -1 -1 365.TIF 1951 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 366.TIF 1952 2 25 2 -1 -1 -1 -1 -1 -1 -1 367.TIF 1952 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 368.TIF 1952 3 10 8 -1 -1 -1 -1 -1 -1 -1 369.TIF 1952 3 17 2 3 -1 -1 -1 -1 -1 -1 370.TIF WEST ENTRANCE 1952 3 17 8 10 -1 -1 -1 -1 -1 -1 370.TIF EAST ENTRANCE 1952 3 24 8 10 RT -1 -1 -1 -1 -1 -1 371.TIF SOUTHEAST PORTION 1952 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 371.TIF EXCEPT SOUTHEAST PORTION 1952 3 31 2 -1 -1 -1 -1 -1 -1 -1 372.TIF 1953 2 24 4 6 -1 -1 -1 -1 -1 -1 375.TIF 1953 3 2 2 8 -1 -1 -1 -1 -1 -1 528.TIF 1954 3 1 2 4 FD -1 -1 BK -1 -1 -1 -1 381.TIF 1954 3 8 6 8 NI -1 -1 -1 -1 -1 -1 382.TIF 1954 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 384.TIF 1954 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 385.TIF 1954 4 5 4 6 -1 -1 -1 -1 -1 -1 386.TIF ALONG SHORE 1954 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 386.TIF HARBOR ENTRANCE 1954 4 12 -1 -1 OW -1 -1 -1 -1 -1 -1 387.TIF 1955 3 7 20 24 SO -1 -1 -1 -1 -1 -1 391.TIF 1955 3 14 22 24 WI -1 -1 IP -1 -1 BV -1 -1 393.TIF 1955 3 21 20 26 -1 -1 -1 -1 -1 -1 394.TIF 1955 3 21 -1 -1 OW -1 -1 -1 -1 -1 -1 394.TIF ENTRANCE 1955 3 28 3 5 -1 -1 -1 -1 -1 -1 395.TIF WEST END 1955 3 28 20 26 -1 -1 -1 -1 -1 -1 395.TIF EAST HALF 1955 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 395.TIF ENTRANCE 1955 4 11 -1 -1 OW -1 -1 -1 -1 -1 -1 396.TIF ENTRANCE 1956 2 27 12 -1 CL -1 -1 -1 -1 -1 -1 397.TIF 1956 3 5 12 24 SO -1 -1 CL -1 -1 -1 -1 399.TIF 1956 3 19 10 12 -1 -1 -1 -1 -1 -1 402.TIF 1956 3 26 12 -1 -1 -1 -1 -1 -1 -1 403.TIF 1956 3 26 -1 -1 OW -1 -1 -1 -1 -1 -1 403.TIF HARBOR ENTRANCE 1956 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 406.TIF 1957 2 25 15 -1 SO -1 -1 -1 -1 -1 -1 407.TIF 1957 3 4 15 -1 -1 -1 -1 -1 -1 -1 409.TIF 1957 3 11 17 -1 -1 -1 -1 -1 -1 -1 411.TIF 1957 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 413.TIF 1957 4 1 20 -1 DI -1 -1 -1 -1 -1 -1 414.TIF 1958 2 24 -1 -1 SO -1 -1 BV -1 -1 -1 -1 416.TIF 1958 3 3 12 18 -1 -1 -1 -1 -1 -1 417.TIF TO ENTRANCE 1958 3 24 12 14 -1 -1 -1 -1 -1 -1 420.TIF 1958 3 31 12 14 IP -1 -1 SW -1 -1 -1 -1 421.TIF (50% ICE COVER) 1958 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 422.TIF 1959 3 2 4 24 -1 -1 -1 -1 -1 -1 424.TIF 1959 3 9 24 42 -1 -1 -1 -1 -1 -1 425.TIF 1959 3 16 8 42 -1 -1 -1 -1 -1 -1 426.TIF 1959 3 23 22 -1 SW -1 -1 -1 -1 -1 -1 427.TIF (50% ICE COVER) 1959 3 30 20 -1 SW -1 -1 -1 -1 -1 -1 429.TIF NEAR COAST GUARD DOCKS 1959 4 13 -1 -1 OW -1 -1 -1 -1 -1 -1 431.TIF 1960 2 19 8 -1 PN -1 -1 -1 -1 -1 -1 523.TIF 1960 3 7 12 -1 FS -1 -1 -1 -1 -1 -1 434.TIF 1960 3 14 12 -1 -1 -1 -1 -1 -1 -1 435.TIF 1960 3 21 13 -1 -1 -1 -1 -1 -1 -1 436.TIF 1960 3 28 14 -1 -1 -1 -1 -1 -1 -1 437.TIF 1960 4 11 -1 -1 OW -1 -1 -1 -1 -1 -1 439.TIF 1961 2 27 10 24 -1 -1 -1 -1 -1 -1 440.TIF 1961 3 6 24 -1 SW -1 -1 -1 -1 -1 -1 441.TIF 1961 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 442.TIF 1961 3 20 2 3 SI -1 -1 PN -1 -1 -1 -1 443.TIF 1961 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 444.TIF 1961 4 3 -1 -1 OW -1 -1 -1 -1 -1 -1 445.TIF 1962 2 26 14 -1 FD -1 -1 DI -1 -1 WI -1 -1 447.TIF 1962 3 5 20 -1 FS -1 -1 -1 -1 -1 -1 448.TIF 1962 3 12 20 -1 -1 -1 -1 -1 -1 -1 449.TIF 1962 3 19 20 -1 SW -1 -1 -1 -1 -1 -1 450.TIF 1962 3 26 20 -1 WI -1 -1 SW -1 -1 -1 -1 451.TIF 1962 4 9 12 -1 FD -1 -1 FS -1 -1 SI -1 -1 453.TIF 1963 2 25 28 -1 FS -1 -1 WI -1 -1 -1 -1 456.TIF 1963 3 4 28 -1 FD -1 -1 FS -1 -1 -1 -1 457.TIF 1963 3 18 28 -1 WI -1 -1 -1 -1 -1 -1 459.TIF 1963 3 25 28 -1 FD -1 -1 -1 -1 -1 -1 460.TIF 1963 4 1 28 -1 RT -1 -1 SW -1 -1 -1 -1 461.TIF 1963 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 462.TIF 1964 2 24 -1 -1 OW -1 -1 -1 -1 -1 -1 465.TIF 1964 3 2 6 -1 PN -1 -1 -1 -1 -1 -1 466.TIF 1964 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 467.TIF 1964 3 16 10 -1 -1 -1 -1 -1 -1 -1 468.TIF (50% ICE COVER) 1964 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 469.TIF 1964 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 470.TIF 1964 4 6 -1 -1 OW -1 -1 -1 -1 -1 -1 471.TIF 1965 3 1 20 -1 -1 -1 -1 -1 -1 -1 474.TIF 1965 3 8 23 -1 -1 -1 -1 -1 -1 -1 475.TIF 1965 3 15 22 -1 -1 -1 -1 -1 -1 -1 476.TIF 1965 3 22 25 -1 -1 -1 -1 -1 -1 -1 477.TIF 1965 4 5 24 -1 FS -1 -1 CL -1 -1 SC -1 -1 479.TIF 1965 4 12 27 -1 -1 -1 -1 -1 -1 -1 480.TIF 1966 2 28 28 -1 -1 -1 -1 -1 -1 -1 483.TIF 1966 3 14 20 -1 FS -1 -1 CL -1 -1 -1 -1 485.TIF 1966 3 28 10 -1 -1 -1 -1 -1 -1 -1 487.TIF 1967 3 6 21 36 FS -1 -1 IJ -1 -1 -1 -1 490.TIF 1967 3 13 21 -1 FS -1 -1 -1 -1 -1 -1 491.TIF 1967 3 20 21 -1 -1 -1 -1 -1 -1 -1 492.TIF 1967 3 27 15 -1 -1 -1 -1 -1 -1 -1 493.TIF 1968 3 4 18 -1 -1 -1 -1 -1 -1 -1 520.TIF (50% ICE COVER) 1968 3 11 8 -1 -1 -1 -1 -1 -1 -1 497.TIF (50% ICE COVER) 1968 3 18 12 -1 -1 -1 -1 -1 -1 -1 498.TIF (70% ICE COVER) 1968 3 25 6 -1 -1 -1 -1 -1 -1 -1 499.TIF (80% ICE COVER) 1968 4 1 2 -1 -1 -1 -1 -1 -1 -1 500.TIF (10% ICE COVER) 1968 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 501.TIF 1969 2 24 10 -1 -1 -1 -1 -1 -1 -1 503.TIF 1969 3 3 14 -1 -1 -1 -1 -1 -1 -1 504.TIF 1969 3 10 15 -1 -1 -1 -1 -1 -1 -1 505.TIF (90% ICE COVER) 1969 3 17 15 -1 -1 -1 -1 -1 -1 -1 506.TIF (90% ICE COVER) 1969 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 507.TIF 1969 3 31 5 -1 -1 -1 -1 -1 -1 -1 508.TIF (90% ICE COVER) 1970 3 24 3 -1 -1 -1 -1 -1 -1 -1 513.TIF (50% ICE COVER) 1970 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 514.TIF 1970 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 515.TIF 1970 4 14 -1 -1 OW -1 -1 -1 -1 -1 -1 516.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.