GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 308, Approximate Location: 43.78 N. Latitude, 86.43 W. Longitude Site Name Pentwater on Lake Michigan ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1909 4 6 -1 -1 OW -1 -1 -1 -1 -1 -1 069.TIF LAKE 1909 4 6 -1 -1 BK -1 -1 -1 -1 -1 -1 069.TIF PENTWATER LAKE 1910 3 15 -1 -1 FD -1 -1 -1 -1 -1 -1 073.TIF TO 1 & 1/2Mi OUT 1910 3 22 -1 -1 DI -1 -1 -1 -1 -1 -1 074.TIF 1911 3 7 10 -1 -1 -1 -1 -1 -1 -1 077.TIF PENTWATER LAKE 1911 3 7 -1 -1 FD -1 -1 -1 -1 -1 -1 077.TIF LAKE 1912 3 12 -1 -1 LI -1 -1 -1 -1 -1 -1 083.TIF LAKE 1912 3 19 -1 -1 FD -1 -1 -1 -1 -1 -1 084.TIF LAKE 1912 3 26 -1 -1 LI -1 -1 -1 -1 -1 -1 085.TIF LAKE 1913 3 4 -1 -1 FD -1 -1 -1 -1 -1 -1 090.TIF LAKE 1913 3 11 -1 -1 FD -1 -1 -1 -1 -1 -1 091.TIF LAKE 1913 3 18 -1 -1 FD -1 -1 -1 -1 -1 -1 092.TIF TO 3Mi OUT 1913 3 25 -1 -1 FD -1 -1 -1 -1 -1 -1 093.TIF 1913 4 1 -1 -1 FD -1 -1 -1 -1 -1 -1 094.TIF LAKE 1920 3 16 -1 -1 FD -1 -1 -1 -1 -1 -1 141.TIF LAKE 1920 3 23 -1 -1 HF -1 -1 -1 -1 -1 -1 142.TIF 1920 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 143.TIF LAKE 1920 4 6 -1 -1 HF -1 -1 -1 -1 -1 -1 144.TIF LAKE 1920 4 9 -1 -1 HF -1 -1 WI -1 -1 -1 -1 145.TIF LAKE 1924 3 4 -1 -1 FD -1 -1 -1 -1 -1 -1 163.TIF 1932 3 15 -1 -1 IP -1 -1 -1 -1 -1 -1 216.TIF ALONG SHORE 1933 3 21 -1 -1 IP -1 -1 -1 -1 -1 -1 222.TIF 1933 3 21 -1 -1 OW -1 -1 -1 -1 -1 -1 222.TIF CHANNEL 1934 3 6 -1 -1 IP -1 -1 BV -1 -1 -1 -1 228.TIF 1934 3 13 -1 -1 IP -1 -1 -1 -1 -1 -1 229.TIF TO FRANKFORT: TO 0 TO 3Mi OUT 1934 3 27 10 -1 -1 -1 -1 -1 -1 -1 231.TIF PENTWATER LAKE 1934 4 3 -1 -1 IP -1 -1 -1 -1 -1 -1 232.TIF SHORE 1936 3 30 -1 -1 IP -1 -1 BV -1 -1 -1 -1 247.TIF 1936 4 6 -1 -1 IP -1 -1 -1 -1 -1 -1 248.TIF TO 1/4Mi OUT 1936 4 13 -1 -1 IP -1 -1 -1 -1 -1 -1 249.TIF 1937 3 8 -1 -1 IP -1 -1 -1 -1 -1 -1 254.TIF TO 1Mi OUT 1937 3 22 -1 -1 SI -1 -1 -1 -1 -1 -1 256.TIF TO 2Mi OUT 1939 3 6 -1 -1 SI -1 -1 -1 -1 -1 -1 268.TIF TO 3Mi OUT 1939 3 13 -1 -1 FD -1 -1 BK -1 -1 -1 -1 269.TIF 1941 3 10 -1 -1 OW -1 -1 -1 -1 -1 -1 286.TIF LAKE 1943 3 8 -1 -1 IP -1 -1 -1 -1 -1 -1 299.TIF TO 1/2 TO 2Mi OUT ---------------------------------------------------------------------------------------------------------- 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.