GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 157, Approximate Location: 45.03 N. Latitude, 83.33 W. Longitude Site Name Thunder Bay, MI on Lake Huron ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1917 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 120.TIF NARROW LANE SE OF STATION 1917 3 6 -1 -1 IP -1 -1 -1 -1 -1 -1 120.TIF 1922 3 7 -1 -1 IP -1 -1 -1 -1 -1 -1 149.TIF TO 8Mi OUT 1922 3 14 -1 -1 SO -1 -1 -1 -1 -1 -1 150.TIF HARBORS 1922 3 14 -1 -1 IP -1 -1 -1 -1 -1 -1 150.TIF TO 1/2Mi OUT 1923 3 13 -1 -1 SO -1 -1 -1 -1 -1 -1 156.TIF 1923 3 13 -1 -1 HF -1 -1 -1 -1 -1 -1 156.TIF TO OSCODA 1923 3 20 -1 -1 OW -1 -1 -1 -1 -1 -1 157.TIF OUTER PORTION 1926 4 13 -1 -1 SO -1 -1 -1 -1 -1 -1 182.TIF 1926 4 20 -1 -1 OW -1 -1 -1 -1 -1 -1 183.TIF 1927 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 185.TIF EXCEPT SOME SHORE ICE 1928 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 190.TIF 1928 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 193.TIF 1929 3 5 -1 -1 IP -1 -1 -1 -1 -1 -1 196.TIF 1929 3 12 -1 -1 BK -1 -1 -1 -1 -1 -1 197.TIF 1929 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 198.TIF 1930 3 4 -1 -1 IP -1 -1 -1 -1 -1 -1 202.TIF TO 4Mi OUT 1930 3 11 -1 -1 FD -1 -1 -1 -1 -1 -1 203.TIF TO 4Mi OUT 1930 3 18 -1 -1 IP -1 -1 -1 -1 -1 -1 204.TIF TO 3Mi OUT 1930 3 18 -1 -1 FD -1 -1 DI -1 -1 -1 -1 204.TIF BEYOND 3Mi OUT 1930 3 25 -1 -1 SW -1 -1 -1 -1 -1 -1 205.TIF 1930 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 206.TIF 1932 3 15 -1 -1 FD -1 -1 -1 -1 -1 -1 216.TIF 1937 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 256.TIF 1937 3 22 -1 -1 FD -1 -1 BV -1 -1 -1 -1 256.TIF NORTHWARD 1937 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 257.TIF 1938 3 14 24 30 SC -1 -1 -1 -1 -1 -1 262.TIF 1938 3 21 -1 -1 OW -1 -1 -1 -1 -1 -1 263.TIF 1939 3 6 -1 -1 SO -1 -1 -1 -1 -1 -1 268.TIF 1939 3 13 -1 -1 SO -1 -1 -1 -1 -1 -1 269.TIF 1939 3 20 -1 -1 SO -1 -1 BV -1 -1 -1 -1 270.TIF 1939 3 27 -1 -1 OW -1 -1 -1 -1 -1 -1 271.TIF 1939 4 24 35 -1 -1 -1 -1 -1 -1 -1 275.TIF 1940 3 11 -1 -1 OW -1 -1 -1 -1 -1 -1 278.TIF 1940 3 18 -1 -1 SO -1 -1 -1 -1 -1 -1 279.TIF 1940 3 24 -1 -1 SO -1 -1 -1 -1 -1 -1 280.TIF 1941 3 3 -1 -1 IP -1 -1 -1 -1 -1 -1 285.TIF 1941 3 17 -1 -1 SW -1 -1 -1 -1 -1 -1 287.TIF 1941 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 289.TIF FROM 2ND AVENUE BRIDGE DOWN 1941 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 289.TIF RIVER: 2ND AVENUE BRIDGE DOWN 1942 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 292.TIF 1942 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 294.TIF 1943 3 1 -1 -1 OW -1 -1 -1 -1 -1 -1 298.TIF EXCEPT ALONG SHORE 1943 3 8 16 -1 -1 -1 -1 -1 -1 -1 299.TIF 1943 4 5 -1 -1 SW -1 -1 -1 -1 -1 -1 303.TIF CHANNEL (CUT) 1944 3 6 -1 -1 DI -1 -1 -1 -1 -1 -1 308.TIF 1944 3 13 -1 -1 HF -1 -1 -1 -1 -1 -1 309.TIF EXCEPT FOR A SMALL CHANNEL 1944 3 13 -1 -1 OW -1 -1 -1 -1 -1 -1 309.TIF 1944 3 20 -1 -1 IP -1 -1 SW -1 -1 -1 -1 310.TIF 1946 3 4 22 24 SC 12 18 -1 -1 -1 -1 318.TIF 1946 3 11 -1 -1 IP -1 -1 BV -1 -1 -1 -1 319.TIF TO DULUTH 1946 3 11 -1 -1 OW -1 -1 -1 -1 -1 -1 319.TIF 1946 3 18 -1 -1 OW -1 -1 BV -1 -1 -1 -1 320.TIF 1946 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 323.TIF 1/2 OF BAY 1947 3 3 -1 -1 FD -1 -1 -1 -1 -1 -1 326.TIF TO WELCOME ISLANDS 1947 3 3 -1 -1 DI -1 -1 -1 -1 -1 -1 326.TIF 1947 3 10 -1 -1 DI -1 -1 -1 -1 -1 -1 327.TIF 1947 3 24 -1 -1 LF -1 -1 -1 -1 -1 -1 329.TIF 1947 3 31 -1 -1 HF -1 -1 SO -1 -1 -1 -1 330.TIF TO ISLE ROYALE 1948 3 1 -1 -1 IP -1 -1 -1 -1 -1 -1 334.TIF (70% ICE COVER) 1948 3 8 24 -1 DI -1 -1 -1 -1 -1 -1 335.TIF 1948 3 8 -1 -1 FD -1 -1 -1 -1 -1 -1 335.TIF FROM BW TO WELCOME ISLAND 1948 3 15 -1 -1 SO -1 -1 SW -1 -1 -1 -1 336.TIF 1948 3 22 -1 -1 FD -1 -1 DI -1 -1 -1 -1 337.TIF (70% ICE COVER) 1949 3 14 -1 -1 IP -1 -1 -1 -1 -1 -1 344.TIF ALONG SHORE 1949 3 21 30 35 -1 -1 -1 -1 -1 -1 345.TIF 1949 3 21 -1 -1 SW -1 -1 -1 -1 -1 -1 345.TIF 6 & 1/2Mi OUT 1950 2 27 24 -1 CL -1 -1 SC -1 -1 -1 -1 349.TIF 1950 3 6 21 -1 -1 -1 -1 -1 -1 -1 350.TIF 1950 3 6 19 -1 -1 -1 -1 -1 -1 -1 350.TIF WYANDOTTE CHEMICAL SLIP 1950 3 6 -1 -1 OW -1 -1 -1 -1 -1 -1 350.TIF ON THE HORIZON 1950 3 13 -1 -1 SO -1 -1 SC -1 -1 WI -1 -1 351.TIF 1950 3 13 -1 -1 SO -1 -1 -1 -1 -1 -1 351.TIF 1950 3 13 -1 -1 FD -1 -1 DI -1 -1 -1 -1 351.TIF BEYOND BAY 1950 3 20 -1 -1 FD -1 -1 -1 -1 -1 -1 352.TIF 1950 3 27 27 38 -1 -1 -1 -1 -1 -1 353.TIF 1950 4 3 -1 -1 SO -1 -1 -1 -1 -1 -1 354.TIF 1951 2 26 -1 -1 IP -1 -1 -1 -1 -1 -1 359.TIF TO 3/4Mi OUT 1952 3 10 18 20 SO -1 -1 -1 -1 -1 -1 369.TIF TO THUNDER CAPE 1953 3 9 -1 -1 DI -1 -1 WI -1 -1 -1 -1 376.TIF 1955 3 7 -1 -1 IP -1 -1 -1 -1 -1 -1 391.TIF TO 2Mi OUT 1959 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 425.TIF TO OSCODA 1959 3 23 -1 -1 FD -1 -1 FS -1 -1 SC -1 -1 427.TIF WEST END: TO 1/2Mi OUT 1959 3 30 -1 -1 HF -1 -1 DI -1 -1 -1 -1 429.TIF 1962 3 5 6 -1 FD -1 -1 CL -1 -1 SW -1 -1 448.TIF TO OSCODA 1962 3 19 -1 -1 SO -1 -1 -1 -1 -1 -1 450.TIF 1962 3 26 -1 -1 FD -1 -1 SI -1 -1 WI -1 -1 451.TIF TO PORT HURON (90% ICE COVER) 1963 3 18 -1 -1 SO -1 -1 -1 -1 -1 -1 459.TIF 1963 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 462.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.