GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 067, Approximate Location: 46.67 N. Latitude, 85.98 W. Longitude Site Name Grand Marais Harbor, MI on Lake Superior ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1900 2 27 12 -1 -1 -1 -1 -1 -1 -1 003.TIF 1900 3 6 -1 -1 SO -1 -1 -1 -1 -1 -1 004.TIF 1900 4 14 -1 -1 RT -1 -1 -1 -1 -1 -1 010.TIF 1902 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 021.TIF 1903 3 10 22 -1 SO -1 -1 -1 -1 -1 -1 025.TIF 1903 3 24 -1 -1 LI -1 -1 -1 -1 -1 -1 027.TIF 1903 3 31 -1 -1 LI -1 -1 BK -1 -1 -1 -1 028.TIF 1904 3 29 36 -1 -1 -1 -1 -1 -1 -1 033.TIF 1904 4 5 30 -1 RT -1 -1 -1 -1 -1 -1 034.TIF 1904 4 12 27 -1 RT -1 -1 -1 -1 -1 -1 035.TIF 1904 4 19 -1 -1 SO -1 -1 -1 -1 -1 -1 036.TIF 1904 4 26 -1 -1 RT -1 -1 -1 -1 -1 -1 037.TIF 1904 4 29 -1 -1 RT -1 -1 -1 -1 -1 -1 038.TIF 1905 3 14 24 -1 SO -1 -1 -1 -1 -1 -1 040.TIF 1905 3 21 26 -1 SO -1 -1 -1 -1 -1 -1 041.TIF 1905 3 28 -1 -1 RT -1 -1 -1 -1 -1 -1 042.TIF 1905 4 4 -1 -1 RT -1 -1 DC -1 -1 -1 -1 043.TIF 1905 4 11 -1 -1 RT -1 -1 SW -1 -1 -1 -1 044.TIF 1906 3 6 -1 -1 LF -1 -1 RT -1 -1 -1 -1 045.TIF WEST END OF HARBOR 1906 3 6 -1 -1 SO -1 -1 -1 -1 -1 -1 045.TIF EAST END OF HARBOR 1906 3 13 20 -1 -1 -1 -1 -1 -1 -1 046.TIF EAST END OF HARBOR 1906 3 20 6 20 -1 -1 -1 -1 -1 -1 047.TIF 1906 3 27 6 20 SO -1 -1 -1 -1 -1 -1 048.TIF 1906 4 3 6 20 RT -1 -1 -1 -1 -1 -1 049.TIF 1906 4 10 -1 -1 SW -1 -1 -1 -1 -1 -1 050.TIF 1907 3 5 28 -1 SO -1 -1 -1 -1 -1 -1 051.TIF 1907 3 19 -1 -1 SO -1 -1 -1 -1 -1 -1 053.TIF 1907 3 26 20 -1 RT -1 -1 -1 -1 -1 -1 054.TIF 1907 4 2 -1 -1 RT -1 -1 SW -1 -1 -1 -1 055.TIF 1907 4 9 -1 -1 RT -1 -1 -1 -1 -1 -1 056.TIF 1908 3 3 24 -1 SO -1 -1 -1 -1 -1 -1 057.TIF 1908 3 10 24 -1 SO -1 -1 -1 -1 -1 -1 058.TIF 1908 3 17 24 -1 SO -1 -1 -1 -1 -1 -1 059.TIF 1908 3 24 30 -1 SO -1 -1 -1 -1 -1 -1 060.TIF 1908 3 31 30 -1 -1 -1 -1 -1 -1 -1 524.TIF 1908 4 14 -1 -1 BK -1 -1 RT -1 -1 -1 -1 062.TIF 1908 4 21 -1 -1 RT -1 -1 -1 -1 -1 -1 063.TIF 1909 3 2 24 -1 -1 -1 -1 -1 -1 -1 064.TIF 1909 3 16 28 -1 -1 -1 -1 -1 -1 -1 066.TIF 1909 3 23 28 -1 SO -1 -1 -1 -1 -1 -1 067.TIF 1909 3 30 26 -1 RT -1 -1 -1 -1 -1 -1 068.TIF 1909 4 6 26 -1 RT -1 -1 -1 -1 -1 -1 069.TIF 1909 4 13 -1 -1 BK -1 -1 -1 -1 -1 -1 070.TIF 1910 3 1 22 -1 SO -1 -1 -1 -1 -1 -1 071.TIF 1910 3 8 -1 -1 BK -1 -1 -1 -1 -1 -1 072.TIF 1910 3 15 18 -1 -1 -1 -1 -1 -1 -1 073.TIF 1910 3 22 -1 -1 RT -1 -1 BK -1 -1 -1 -1 074.TIF 1910 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 075.TIF 1911 3 7 22 -1 -1 -1 -1 -1 -1 -1 077.TIF 1911 3 14 -1 -1 BK -1 -1 -1 -1 -1 -1 078.TIF 1911 3 21 -1 -1 BK -1 -1 -1 -1 -1 -1 079.TIF 1911 3 28 -1 -1 OW -1 -1 -1 -1 -1 -1 080.TIF 1911 3 28 22 -1 RT -1 -1 BK -1 -1 -1 -1 080.TIF 1911 4 4 -1 -1 SI -1 -1 -1 -1 -1 -1 081.TIF 1912 3 5 25 -1 -1 -1 -1 -1 -1 -1 082.TIF 1912 3 5 26 -1 SO -1 -1 SC -1 -1 -1 -1 082.TIF 1912 3 12 27 -1 SO -1 -1 -1 -1 -1 -1 083.TIF 1912 3 19 27 -1 -1 -1 -1 -1 -1 -1 084.TIF 1912 3 26 29 -1 SO -1 -1 -1 -1 -1 -1 085.TIF 1912 4 2 29 -1 SO -1 -1 -1 -1 -1 -1 086.TIF 1912 4 9 28 -1 RT -1 -1 -1 -1 -1 -1 087.TIF 1912 4 16 28 -1 RT -1 -1 -1 -1 -1 -1 088.TIF 1913 3 4 20 -1 SO -1 -1 -1 -1 -1 -1 090.TIF 1913 3 18 15 -1 -1 -1 -1 -1 -1 -1 092.TIF 1913 3 25 20 -1 SO -1 -1 -1 -1 -1 -1 093.TIF 1913 4 1 20 -1 SC -1 -1 -1 -1 -1 -1 094.TIF 1913 4 8 10 -1 -1 -1 -1 -1 -1 -1 095.TIF 1913 4 8 16 -1 RT -1 -1 SL -1 -1 -1 -1 095.TIF 1913 4 15 16 -1 SO -1 -1 SL 6 -1 -1 -1 096.TIF 1913 4 22 -1 -1 RT -1 -1 CL -1 -1 -1 -1 097.TIF 1914 3 3 16 -1 -1 -1 -1 -1 -1 -1 098.TIF 1914 3 17 16 -1 SO -1 -1 -1 -1 -1 -1 100.TIF 1914 3 24 17 -1 SO -1 -1 -1 -1 -1 -1 101.TIF 1914 3 31 16 -1 RT -1 -1 -1 -1 -1 -1 102.TIF 1914 4 14 12 -1 RT -1 -1 -1 -1 -1 -1 104.TIF 1915 3 9 20 -1 SO -1 -1 -1 -1 -1 -1 106.TIF 1915 3 16 20 -1 -1 -1 -1 -1 -1 -1 107.TIF 1915 3 23 20 -1 SO -1 -1 -1 -1 -1 -1 108.TIF 1915 3 30 20 -1 SO -1 -1 -1 -1 -1 -1 109.TIF 1915 4 6 20 -1 SO -1 -1 -1 -1 -1 -1 110.TIF 1915 4 13 -1 -1 RT -1 -1 -1 -1 -1 -1 111.TIF 1915 4 20 -1 -1 RT -1 -1 WT -1 -1 -1 -1 112.TIF 1916 3 14 24 -1 -1 -1 -1 -1 -1 -1 114.TIF 1916 3 21 26 -1 -1 -1 -1 -1 -1 -1 115.TIF 1916 3 28 26 -1 SO -1 -1 -1 -1 -1 -1 116.TIF 1916 4 4 24 -1 SL 3 -1 RT -1 -1 -1 -1 117.TIF 1916 4 11 20 -1 SO -1 -1 -1 -1 -1 -1 118.TIF 1916 4 17 -1 -1 IP -1 -1 -1 -1 -1 -1 119.TIF 1917 3 6 24 -1 SO -1 -1 -1 -1 -1 -1 120.TIF 1917 3 13 26 -1 SO -1 -1 -1 -1 -1 -1 121.TIF 1917 3 27 26 -1 SL -1 -1 -1 -1 -1 -1 123.TIF 1917 4 3 26 -1 SO -1 -1 SL 6 -1 -1 -1 124.TIF 1917 4 17 20 -1 SO -1 -1 -1 -1 -1 -1 126.TIF 1917 4 24 18 -1 CL -1 -1 RT -1 -1 -1 -1 127.TIF 1917 4 24 -1 -1 OW -1 -1 -1 -1 -1 -1 127.TIF AROUND THE PIERS 1918 3 5 32 -1 SO -1 -1 SC -1 -1 -1 -1 128.TIF 1918 3 12 32 -1 SO -1 -1 SC -1 -1 -1 -1 129.TIF 1918 3 19 32 -1 -1 -1 -1 -1 -1 -1 130.TIF 1918 4 2 25 -1 RT -1 -1 -1 -1 -1 -1 132.TIF 1919 3 4 13 -1 -1 -1 -1 -1 -1 -1 136.TIF 1919 3 4 -1 -1 OW -1 -1 -1 -1 -1 -1 136.TIF WEST END 1919 3 11 14 -1 SI -1 -1 -1 -1 -1 -1 137.TIF 1919 3 18 -1 -1 BK -1 -1 -1 -1 -1 -1 138.TIF 1919 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 139.TIF 1920 3 9 26 -1 SO -1 -1 -1 -1 -1 -1 140.TIF 1920 3 16 26 -1 -1 -1 -1 -1 -1 -1 141.TIF 1920 3 23 26 -1 SO -1 -1 -1 -1 -1 -1 142.TIF 1920 4 6 -1 -1 BK -1 -1 RT -1 -1 -1 -1 144.TIF 1925 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 173.TIF 1932 3 15 6 -1 -1 -1 -1 -1 -1 -1 216.TIF 1932 3 22 -1 -1 SO -1 -1 -1 -1 -1 -1 217.TIF 1933 3 21 -1 -1 LI -1 -1 -1 -1 -1 -1 222.TIF 1933 3 28 2 -1 -1 -1 -1 -1 -1 -1 223.TIF 1934 4 24 6 20 -1 -1 -1 -1 -1 -1 235.TIF 1935 3 5 18 -1 -1 -1 -1 -1 -1 -1 237.TIF 1935 3 26 12 20 -1 -1 -1 -1 -1 -1 240.TIF 1935 4 2 -1 -1 BK -1 -1 -1 -1 -1 -1 241.TIF 1935 4 9 18 -1 -1 -1 -1 -1 -1 -1 242.TIF 1938 3 28 13 -1 -1 -1 -1 -1 -1 -1 264.TIF 1938 4 11 -1 -1 IP -1 -1 -1 -1 -1 -1 266.TIF 1941 3 3 14 -1 -1 -1 -1 -1 -1 -1 285.TIF 1941 3 17 48 72 PI -1 -1 -1 -1 -1 -1 287.TIF 1941 3 24 72 -1 PI -1 -1 -1 -1 -1 -1 288.TIF 1942 4 6 -1 -1 SI -1 -1 PN -1 -1 -1 -1 296.TIF 1943 4 12 18 -1 -1 -1 -1 -1 -1 -1 304.TIF 1944 3 13 24 -1 -1 -1 -1 -1 -1 -1 309.TIF 1944 3 20 8 12 -1 -1 -1 -1 -1 -1 310.TIF 1944 4 10 6 8 WI -1 -1 -1 -1 -1 -1 313.TIF 1944 4 17 12 15 WI -1 -1 -1 -1 -1 -1 314.TIF 1945 3 19 24 -1 RT -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 20 22 -1 -1 -1 -1 -1 -1 319.TIF 1946 3 18 -1 -1 BK -1 -1 RT -1 -1 -1 -1 320.TIF 1946 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 321.TIF 1946 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 321.TIF CHANNEL 1946 3 25 -1 -1 FD -1 -1 DI -1 -1 -1 -1 321.TIF 5Mi OUT 1946 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 322.TIF 1947 3 3 16 -1 -1 -1 -1 -1 -1 -1 326.TIF 1947 3 10 18 -1 -1 -1 -1 -1 -1 -1 327.TIF 1947 3 24 20 -1 -1 -1 -1 -1 -1 -1 329.TIF 1947 3 31 24 -1 -1 -1 -1 -1 -1 -1 330.TIF 1948 3 1 18 -1 -1 -1 -1 -1 -1 -1 334.TIF 1948 3 15 18 -1 -1 -1 -1 -1 -1 -1 336.TIF 1948 3 22 18 -1 -1 -1 -1 -1 -1 -1 337.TIF 1948 4 5 18 -1 RT -1 -1 -1 -1 -1 -1 339.TIF 1949 2 28 10 -1 -1 -1 -1 -1 -1 -1 526.TIF 1949 3 21 14 16 -1 -1 -1 -1 -1 -1 345.TIF 1950 2 27 13 -1 SO -1 -1 CL -1 -1 -1 -1 349.TIF 1950 3 13 13 -1 WI -1 -1 BV -1 -1 -1 -1 351.TIF 1950 3 20 14 -1 -1 -1 -1 -1 -1 -1 352.TIF 1950 3 27 14 -1 -1 -1 -1 -1 -1 -1 353.TIF 1950 4 3 14 -1 WI -1 -1 -1 -1 -1 -1 354.TIF TO 2Mi OUT 1950 4 10 14 -1 -1 -1 -1 -1 -1 -1 355.TIF 1950 4 24 14 -1 -1 -1 -1 -1 -1 -1 357.TIF 1950 5 1 11 -1 RT -1 -1 -1 -1 -1 -1 358.TIF 1951 2 26 12 14 -1 -1 -1 -1 -1 -1 359.TIF 1951 3 5 14 -1 -1 -1 -1 -1 -1 -1 360.TIF 1951 3 12 16 -1 SW -1 -1 -1 -1 -1 -1 361.TIF 1951 3 12 -1 -1 SO -1 -1 WI -1 -1 -1 -1 361.TIF ENTRANCE: TO 1/2Mi OUT 1951 3 19 3 16 -1 -1 -1 -1 -1 -1 362.TIF 1951 3 26 2 20 SO -1 -1 -1 -1 -1 -1 363.TIF 1951 3 26 -1 -1 OW -1 -1 -1 -1 -1 -1 363.TIF ENTRANCE 1951 4 2 10 18 BK -1 -1 SW -1 -1 -1 -1 364.TIF 1951 4 9 20 -1 SW -1 -1 -1 -1 -1 -1 365.TIF 1951 4 16 -1 -1 PI -1 -1 -1 -1 -1 -1 366.TIF 1952 3 3 15 -1 -1 -1 -1 -1 -1 -1 368.TIF 1952 3 17 17 -1 WI -1 -1 -1 -1 -1 -1 370.TIF 1952 3 24 20 -1 CL -1 -1 -1 -1 -1 -1 371.TIF 1952 3 24 -1 -1 HF -1 -1 WI -1 -1 -1 -1 371.TIF OUTER HALF & ENTRY 1952 3 31 16 20 SW -1 -1 -1 -1 -1 -1 372.TIF 1953 2 24 15 -1 -1 -1 -1 -1 -1 -1 375.TIF 1953 3 2 4 -1 SW -1 -1 -1 -1 -1 -1 528.TIF 1953 3 9 4 10 -1 -1 -1 -1 -1 -1 376.TIF 1953 3 9 18 -1 SO -1 -1 -1 -1 -1 -1 377.TIF 1953 3 16 3 12 -1 -1 -1 -1 -1 -1 378.TIF 1953 3 23 -1 -1 LI -1 -1 SI -1 -1 -1 -1 379.TIF 1954 3 1 11 12 SW -1 -1 -1 -1 -1 -1 381.TIF 1954 3 15 4 16 -1 -1 -1 -1 -1 -1 383.TIF 1954 3 22 6 16 HF -1 -1 DI -1 -1 -1 -1 384.TIF 1954 3 29 4 16 SW -1 -1 -1 -1 -1 -1 385.TIF 1955 3 7 4 20 -1 -1 -1 -1 -1 -1 391.TIF 1955 3 14 4 21 -1 -1 -1 -1 -1 -1 393.TIF 1955 3 28 8 24 -1 -1 -1 -1 -1 -1 395.TIF 1956 2 27 15 -1 -1 -1 -1 -1 -1 -1 397.TIF TO 100FT OUT 1956 3 5 18 20 -1 -1 -1 -1 -1 -1 399.TIF 1956 3 12 18 -1 SM -1 -1 -1 -1 -1 -1 401.TIF 1956 3 12 -1 -1 WI -1 -1 -1 -1 -1 -1 401.TIF CHANNEL TO LAKE 1956 3 19 16 20 -1 -1 -1 -1 -1 -1 402.TIF 1956 3 26 18 20 WI -1 -1 -1 -1 -1 -1 403.TIF TO 1000FT OUT 1956 4 2 20 -1 SC 6 12 -1 -1 -1 -1 404.TIF NEAR SHORE 1957 3 25 6 -1 -1 -1 -1 -1 -1 -1 413.TIF REFUGE HARBOR 1958 3 10 12 -1 SO -1 -1 -1 -1 -1 -1 418.TIF 1958 3 17 10 12 SO -1 -1 -1 -1 -1 -1 419.TIF TO 1Mi OUT (INCLUDING CHANNEL) 1958 3 24 12 -1 -1 -1 -1 -1 -1 -1 420.TIF 1958 4 14 8 10 SO -1 -1 SI -1 -1 -1 -1 423.TIF (20% SLUSH ICE) 1959 3 9 26 -1 SO -1 -1 BV -1 -1 -1 -1 425.TIF 1959 3 16 26 -1 -1 -1 -1 -1 -1 -1 426.TIF 1959 3 23 26 -1 SO -1 -1 -1 -1 -1 -1 427.TIF HARBOR & CHANNEL 1959 3 30 26 -1 SO -1 -1 -1 -1 -1 -1 429.TIF 1959 4 6 26 -1 SO -1 -1 -1 -1 -1 -1 430.TIF TO HARBOR ENTRANCE 1959 4 13 22 -1 RT -1 -1 -1 -1 -1 -1 431.TIF 1959 4 13 -1 -1 WI -1 -1 -1 -1 -1 -1 431.TIF HARBOR ENTRANCE 1959 4 20 18 -1 RT -1 -1 -1 -1 -1 -1 432.TIF 1960 2 19 18 -1 SO -1 -1 -1 -1 -1 -1 523.TIF 1960 2 29 18 -1 -1 -1 -1 -1 -1 -1 522.TIF 1960 3 7 18 -1 SO -1 -1 -1 -1 -1 -1 434.TIF 1960 3 14 18 -1 -1 -1 -1 -1 -1 -1 435.TIF 1960 3 21 18 -1 -1 -1 -1 -1 -1 -1 436.TIF 1960 4 4 11 -1 FS -1 -1 WI -1 -1 -1 -1 438.TIF 1960 4 11 11 -1 FS -1 -1 WI -1 -1 -1 -1 439.TIF 1961 3 6 14 -1 FS -1 -1 CL -1 -1 SI -1 -1 441.TIF 1961 3 13 14 -1 FS -1 -1 -1 -1 -1 -1 442.TIF 1961 3 20 18 -1 -1 -1 -1 -1 -1 -1 443.TIF 1961 3 27 17 -1 CL -1 -1 -1 -1 -1 -1 444.TIF 1961 4 3 16 -1 CL -1 -1 BK -1 -1 -1 -1 445.TIF 1961 4 10 8 -1 CL -1 -1 -1 -1 -1 -1 446.TIF 1962 3 5 18 -1 SC 7 -1 BV -1 -1 -1 -1 448.TIF 1962 3 12 16 18 -1 -1 -1 -1 -1 -1 449.TIF 1962 3 19 16 18 WI -1 -1 -1 -1 -1 -1 450.TIF 1962 3 26 14 16 WI -1 -1 -1 -1 -1 -1 451.TIF 1962 4 2 14 16 -1 -1 -1 -1 -1 -1 452.TIF 1962 4 9 6 8 -1 -1 -1 -1 -1 -1 453.TIF 1963 3 4 19 -1 -1 -1 -1 -1 -1 -1 457.TIF 1963 3 11 19 -1 SW -1 -1 -1 -1 -1 -1 458.TIF 1963 3 18 19 -1 -1 -1 -1 -1 -1 -1 459.TIF 1963 3 25 22 -1 -1 -1 -1 -1 -1 -1 460.TIF 1963 4 1 20 -1 -1 -1 -1 -1 -1 -1 461.TIF 1963 4 8 10 -1 -1 -1 -1 -1 -1 -1 462.TIF 1963 4 15 8 10 -1 -1 -1 -1 -1 -1 463.TIF 1963 4 22 -1 -1 OW -1 -1 -1 -1 -1 -1 464.TIF 1964 3 2 14 -1 FS -1 -1 -1 -1 -1 -1 466.TIF 1964 3 23 10 12 PN -1 -1 -1 -1 -1 -1 469.TIF 1965 3 1 22 32 -1 -1 -1 -1 -1 -1 474.TIF 1965 3 8 28 -1 CL -1 -1 -1 -1 -1 -1 475.TIF 1965 3 22 26 32 FS -1 -1 CL -1 -1 -1 -1 477.TIF 1965 3 29 22 -1 CL -1 -1 WI -1 -1 -1 -1 478.TIF 1965 4 5 26 30 CL -1 -1 -1 -1 -1 -1 479.TIF 1965 4 12 22 -1 FS -1 -1 CL -1 -1 -1 -1 480.TIF 1966 2 28 5 12 -1 -1 -1 -1 -1 -1 483.TIF 1966 3 28 6 10 BI -1 -1 SC -1 -1 -1 -1 487.TIF 1966 4 4 -1 -1 BI -1 -1 SC -1 -1 -1 -1 488.TIF 1967 4 3 10 -1 -1 -1 -1 -1 -1 -1 494.TIF 1968 3 4 19 -1 -1 -1 -1 -1 -1 -1 520.TIF 1968 3 11 20 -1 -1 -1 -1 -1 -1 -1 497.TIF 1968 3 18 20 -1 -1 -1 -1 -1 -1 -1 498.TIF 1968 3 25 15 -1 -1 -1 -1 -1 -1 -1 499.TIF 1968 4 1 10 -1 -1 -1 -1 -1 -1 -1 500.TIF (70% ICE COVER) 1968 4 8 8 -1 -1 -1 -1 -1 -1 -1 501.TIF (60% ICE COVER) 1969 2 24 13 -1 -1 -1 -1 -1 -1 -1 503.TIF 1969 3 3 13 -1 -1 -1 -1 -1 -1 -1 504.TIF 1969 3 17 13 -1 -1 -1 -1 -1 -1 -1 506.TIF 1969 3 24 12 -1 -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 10 14 -1 -1 -1 -1 -1 -1 -1 511.TIF 1970 3 17 18 -1 -1 -1 -1 -1 -1 -1 512.TIF 1970 3 24 18 -1 -1 -1 -1 -1 -1 -1 513.TIF 1970 3 31 18 -1 -1 -1 -1 -1 -1 -1 514.TIF 1970 4 14 16 -1 -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.