GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 024, Approximate Location: 47.75 N. Latitude, 90.34 W. Longitude Site Name Grand Marais, MN on Lake Superior ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1907 3 19 -1 -1 FD -1 -1 -1 -1 -1 -1 053.TIF 1911 3 21 -1 -1 LI -1 -1 -1 -1 -1 -1 079.TIF LAKE 1911 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 080.TIF LAKE 1911 4 4 -1 -1 OW -1 -1 -1 -1 -1 -1 081.TIF LAKE 1912 3 5 -1 -1 FD -1 -1 SO -1 -1 -1 -1 082.TIF TO 10Mi OUT 1912 4 22 -1 -1 OW -1 -1 -1 -1 -1 -1 089.TIF LAKE 1913 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 095.TIF LAKE 1914 3 20 -1 -1 FD -1 -1 -1 -1 -1 -1 102.TIF TO 5 TO 6Mi OUT 1915 3 9 -1 -1 FD -1 -1 BV -1 -1 -1 -1 106.TIF SOUTHWARD 1915 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 108.TIF 1916 4 11 -1 -1 OW -1 -1 -1 -1 -1 -1 118.TIF NORTH SHORE: TO 1Mi OUT 1916 4 11 -1 -1 FD -1 -1 BV -1 -1 -1 -1 118.TIF NORTH SHORE: BEYOND 1Mi OUT 1916 4 18 -1 -1 OW -1 -1 -1 -1 -1 -1 119.TIF 1917 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 120.TIF LAKE 1918 3 5 -1 -1 FD -1 -1 SW -1 -1 -1 -1 128.TIF EASTWARD 1920 3 16 -1 -1 OW -1 -1 -1 -1 -1 -1 141.TIF 1924 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 165.TIF 1924 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 166.TIF EASTWARD 1926 3 16 -1 -1 DI -1 -1 -1 -1 -1 -1 178.TIF 1926 4 13 -1 -1 LF -1 -1 -1 -1 -1 -1 182.TIF 1932 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 215.TIF 1934 3 13 -1 -1 IP -1 -1 -1 -1 -1 -1 229.TIF 3Mi OUT 1934 5 1 -1 -1 OW -1 -1 -1 -1 -1 -1 236.TIF 1935 3 19 -1 -1 FD -1 -1 BV -1 -1 -1 -1 239.TIF LAKE 1936 3 10 -1 -1 DI -1 -1 -1 -1 -1 -1 244.TIF 1936 3 17 -1 -1 FD -1 -1 DI -1 -1 -1 -1 245.TIF 1936 3 23 -1 -1 IP -1 -1 -1 -1 -1 -1 246.TIF TO 2Mi OUT 1936 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 246.TIF BEYOND 2Mi OUT 1936 4 6 -1 -1 OW -1 -1 -1 -1 -1 -1 248.TIF 1936 4 13 -1 -1 OW -1 -1 -1 -1 -1 -1 249.TIF 1936 4 20 -1 -1 OW -1 -1 -1 -1 -1 -1 250.TIF 1937 3 15 -1 -1 DI -1 -1 -1 -1 -1 -1 255.TIF 1937 3 22 -1 -1 DI -1 -1 -1 -1 -1 -1 256.TIF 1937 3 29 -1 -1 IP -1 -1 BV -1 -1 -1 -1 257.TIF 1937 4 12 -1 -1 OW -1 -1 -1 -1 -1 -1 259.TIF 1938 3 7 -1 -1 OW -1 -1 -1 -1 -1 -1 261.TIF LAKE 1938 3 14 -1 -1 OW -1 -1 -1 -1 -1 -1 262.TIF 1938 3 21 3 -1 -1 -1 -1 -1 -1 -1 263.TIF BAY 1938 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 264.TIF 1939 3 6 -1 -1 DI -1 -1 -1 -1 -1 -1 268.TIF 1939 3 20 -1 -1 DI -1 -1 BV -1 -1 -1 -1 270.TIF 1939 3 27 -1 -1 DI -1 -1 SL -1 -1 WI -1 -1 271.TIF 1939 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 274.TIF LAKE 1939 4 24 -1 -1 OW -1 -1 BV -1 -1 -1 -1 275.TIF LAKE 1940 3 11 -1 -1 FD -1 -1 DI -1 -1 -1 -1 278.TIF 1940 3 18 -1 -1 FD -1 -1 DI -1 -1 -1 -1 279.TIF LAKE 1940 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 279.TIF 1940 3 24 -1 -1 FD -1 -1 -1 -1 -1 -1 280.TIF 1940 4 1 -1 -1 FD -1 -1 -1 -1 -1 -1 281.TIF 4Mi OUT 1940 4 8 -1 -1 OW -1 -1 BV -1 -1 -1 -1 282.TIF 1941 3 3 -1 -1 IP -1 -1 BV -1 -1 -1 -1 285.TIF LAKE 1941 3 10 5 8 FD -1 -1 BV -1 -1 WI -1 -1 286.TIF LAKE 1941 3 24 -1 -1 IP -1 -1 BV -1 -1 -1 -1 288.TIF 1941 3 31 -1 -1 FD -1 -1 DI -1 -1 -1 -1 289.TIF 1941 4 14 -1 -1 IP -1 -1 -1 -1 -1 -1 291.TIF TO 2Mi OUT 1942 4 6 1 -1 NI -1 -1 -1 -1 -1 -1 296.TIF 1942 4 13 -1 -1 OW -1 -1 -1 -1 -1 -1 297.TIF 1943 3 1 -1 -1 FD -1 -1 DI -1 -1 -1 -1 298.TIF 1943 3 22 -1 -1 IP -1 -1 BV -1 -1 SW -1 -1 301.TIF 1943 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 302.TIF 1944 3 27 -1 -1 LF -1 -1 -1 -1 -1 -1 311.TIF LAKE 1945 3 26 -1 -1 OW -1 -1 -1 -1 -1 -1 316.TIF 1946 3 4 17 -1 -1 -1 -1 -1 -1 -1 318.TIF SHORE ICE 1946 3 4 -1 -1 DI -1 -1 BV -1 -1 -1 -1 318.TIF 1946 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 322.TIF LAKE 1947 3 10 -1 -1 SW -1 -1 -1 -1 -1 -1 327.TIF 1947 3 24 -1 -1 OW -1 -1 BV -1 -1 -1 -1 329.TIF LAKE 1948 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 339.TIF LAKE 1949 3 21 2 3 NI -1 -1 DI -1 -1 -1 -1 345.TIF LAKE 1950 2 16 -1 -1 OW -1 -1 -1 -1 -1 -1 348.TIF LAKE 1950 5 1 -1 -1 OW -1 -1 -1 -1 -1 -1 358.TIF 1951 2 26 -1 -1 DI -1 -1 WI -1 -1 BV -1 -1 359.TIF LAKE 1951 3 12 -1 -1 HF -1 -1 DI -1 -1 -1 -1 361.TIF BEYOND 3Mi OUT 1951 3 19 -1 -1 FD -1 -1 WI -1 -1 SW -1 -1 362.TIF LAKE 1951 4 2 -1 -1 IP -1 -1 WI -1 -1 -1 -1 364.TIF TO 1/2Mi OUT 1951 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 364.TIF BEYOND 1/2Mi OUT 1951 4 9 -1 -1 LI -1 -1 -1 -1 -1 -1 365.TIF LAKE 1951 4 16 -1 -1 OW -1 -1 BV -1 -1 -1 -1 366.TIF LAKE 1952 2 25 -1 -1 FD -1 -1 DI -1 -1 BV -1 -1 367.TIF LAKE 1952 3 10 -1 -1 LF -1 -1 -1 -1 -1 -1 369.TIF LAKE 1952 3 17 -1 -1 SI -1 -1 DI -1 -1 BV -1 -1 370.TIF 1952 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 371.TIF LAKE 1952 3 31 -1 -1 DI -1 -1 SW -1 -1 -1 -1 372.TIF LAKE 1953 3 2 -1 -1 DI -1 -1 -1 -1 -1 -1 528.TIF LAKE 1954 3 1 -1 -1 OW -1 -1 -1 -1 -1 -1 381.TIF SPLIT ROCK LIGHT STATION 1954 3 8 -1 -1 LF -1 -1 -1 -1 -1 -1 382.TIF LAKE 1954 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 383.TIF LAKE 1954 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 384.TIF LAKE 1954 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 386.TIF LAKE 1955 3 7 -1 -1 FD -1 -1 WI -1 -1 -1 -1 391.TIF LAKE 1955 3 21 -1 -1 FD -1 -1 RT -1 -1 SW -1 -1 394.TIF LAKE 1955 3 28 -1 -1 DI -1 -1 -1 -1 -1 -1 395.TIF LAKE 1955 4 11 -1 -1 OW -1 -1 BV -1 -1 -1 -1 396.TIF LAKE 1956 2 27 -1 -1 OW -1 -1 -1 -1 -1 -1 397.TIF LAKE 1956 3 5 -1 -1 LF -1 -1 DI -1 -1 -1 -1 399.TIF LAKE 1956 3 19 -1 -1 LF -1 -1 WI -1 -1 BV -1 -1 402.TIF 1956 3 26 -1 -1 OW -1 -1 -1 -1 -1 -1 403.TIF LAKE 1956 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 406.TIF LAKE 1957 2 25 -1 -1 FD -1 -1 BV -1 -1 -1 -1 407.TIF LAKE 1957 3 4 -1 -1 IP -1 -1 BV -1 -1 -1 -1 409.TIF LAKE 1957 3 11 -1 -1 OW -1 -1 -1 -1 -1 -1 411.TIF LAKE 1957 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 413.TIF LAKE 1957 4 1 20 -1 DI -1 -1 -1 -1 -1 -1 414.TIF LAKE 1958 3 3 -1 -1 SM -1 -1 -1 -1 -1 -1 417.TIF TO 1/2Mi OUT 1958 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 417.TIF 1/2Mi TO 5 & 1/2Mi OUT 1958 3 3 -1 -1 FD -1 -1 BV -1 -1 -1 -1 417.TIF BEYOND 5 & 1/2Mi OUT 1958 3 24 -1 -1 OW -1 -1 -1 -1 -1 -1 420.TIF LAKE 1958 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 421.TIF LAKE 1958 4 7 -1 -1 OW -1 -1 -1 -1 -1 -1 422.TIF LAKE 1959 3 2 4 8 FD -1 -1 DI -1 -1 -1 -1 424.TIF LAKE 1959 3 9 2 8 FD -1 -1 DI -1 -1 -1 -1 425.TIF LAKE 1959 3 16 -1 -1 FS -1 -1 -1 -1 -1 -1 426.TIF LAKE: TO 1Mi OUT 1959 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 427.TIF LAKE 1959 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 429.TIF LAKE 1960 2 19 -1 -1 DI -1 -1 PN -1 -1 SW -1 -1 523.TIF LAKE 1960 3 7 -1 -1 OW -1 -1 -1 -1 -1 -1 434.TIF LAKE 1960 3 14 -1 -1 FD -1 -1 BV -1 -1 -1 -1 435.TIF 1960 3 21 -1 -1 OW -1 -1 -1 -1 -1 -1 436.TIF LAKE 1960 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 437.TIF LAKE 1961 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 441.TIF LAKE 1961 3 13 -1 -1 FD -1 -1 -1 -1 -1 -1 442.TIF LAKE 1961 3 20 -1 -1 OW -1 -1 -1 -1 -1 -1 443.TIF LAKE 1961 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 444.TIF LAKE 1962 2 26 -1 -1 SW -1 -1 -1 -1 -1 -1 447.TIF LAKE 1962 3 5 -1 -1 WI -1 -1 -1 -1 -1 -1 448.TIF LAKE 1962 3 12 19 -1 WI -1 -1 -1 -1 -1 -1 449.TIF LAKE 1962 3 19 -1 -1 WI -1 -1 -1 -1 -1 -1 450.TIF OUTSIDE OF HARBOR 1962 4 9 -1 -1 DI -1 -1 -1 -1 -1 -1 453.TIF LAKE 1963 2 25 -1 -1 FD -1 -1 DI -1 -1 -1 -1 456.TIF LAKE 1964 2 24 -1 -1 OW -1 -1 -1 -1 -1 -1 465.TIF LAKE 1964 3 2 -1 -1 OW -1 -1 -1 -1 -1 -1 466.TIF LAKE 1964 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 470.TIF LAKE 1965 4 5 -1 -1 IP -1 -1 WI -1 -1 BV -1 -1 479.TIF 1965 4 12 -1 -1 IJ -1 -1 WI -1 -1 -1 -1 480.TIF ALONG SHORE 1968 2 26 18 -1 -1 -1 -1 -1 -1 -1 521.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.