untitled

111 Years of Ice-Out Data
Lake Minnetonka
Minnesota, U.S.A.

Challenge Question #4
"When do you predict ice-out of Lake Minnetonka will occur in Spring, 1998? Do you see a correlation between el Nino years and early ice-out dates? Is the earth warming? Do the 111 years of ice-out data from Lake Minnetonka support the global warming theory?"

Year Ice-Out Year Ice-Out Year Ice-Out Year Ice-Out

1997 April 17 1969 April 17 1941 April 13 1913 April 18

1996 April 23 1968 April 19 1940 April 24 1912 April 13

1995 April 3 1967 April 9 1939 April 17 1911 April 1

1994 April 11 1966 April 4 1938 April 2 1910 March 27

1993 April 19 1965 May 1 1937 April 20 1909 April 26

1992 April 10 1964 April 13 1936 April 22 1908 April 12

1991 April 8 1963 April 10 1935 April 5 1907 April 8

1990 April 4 1962 April 25 1934 April 9 1906 April 16

1989 April 17 1961 April 15 1933 April 19 1905 April 2

1988 April 7 1960 April 16 1932 April 11 1904 April 25

1987 March 21 1959 April 10 1931 April 6 1903 April 13

1986 April 8 1958 April 11 1930 April 4 1902 April 1

1985 April 13 1957 April 19 1929 April 5 1901 April 23

1984 April 12 1956 April 21 1928 April 11 1900 April 16

1983 April 22 1955 April 12 1927 April 8 1899 April 24

1982 April 19 1954 April 11 1926 April 18 1898 April 18

1981 March 27 1953 April 9 1925 April 6 1897 April 18

1980 April 19 1952 April 22 1924 April 15 1896 April 5

1979 April 23 1951 April 29 1923 April 23 1895 April 5

1978 April 17 1950 May 2 1922 April 15 1894 April 9

1977 April 10 1949 April 13 1921 April 2 1893 April 28

1976 April 3 1948 April 11 1920 April 16 1892 April 11

1975 April 28 1947 April 19 1919 April 5 1891 April 21

1974 April 20 1946 April 1 1918 April 14 1890 April 16

1973 April 4 1945 March 30 1917 April 18 1889 April 1

1972 April 26 1944 April 23 1916 April 19 1888 April 25

1971 April 16 1943 April 12 1915 April 17 1887 April 14

1970 April 18 1942 April 4 1914 April 17

Year	Ice-Out	Year	Ice-Out	Year	Ice-Out	Year	Ice-Out
1997	April 17	1969	April 17	1941	April 13	1913	April 18
1996	April 23	1968	April 19	1940	April 24	1912	April 13
1995	April 3	1967	April 9	1939	April 17	1911	April 1
1994	April 11	1966	April 4	1938	April 2	1910	March 27
1993	April 19	1965	May 1	1937	April 20	1909	April 26
1992	April 10	1964	April 13	1936	April 22	1908	April 12
1991	April 8	1963	April 10	1935	April 5	1907	April 8
1990	April 4	1962	April 25	1934	April 9	1906	April 16
1989	April 17	1961	April 15	1933	April 19	1905	April 2
1988	April 7	1960	April 16	1932	April 11	1904	April 25
1987	March 21	1959	April 10	1931	April 6	1903	April 13
1986	April 8	1958	April 11	1930	April 4	1902	April 1
1985	April 13	1957	April 19	1929	April 5	1901	April 23
1984	April 12	1956	April 21	1928	April 11	1900	April 16
1983	April 22	1955	April 12	1927	April 8	1899	April 24
1982	April 19	1954	April 11	1926	April 18	1898	April 18
1981	March 27	1953	April 9	1925	April 6	1897	April 18
1980	April 19	1952	April 22	1924	April 15	1896	April 5
1979	April 23	1951	April 29	1923	April 23	1895	April 5
1978	April 17	1950	May 2	1922	April 15	1894	April 9
1977	April 10	1949	April 13	1921	April 2	1893	April 28
1976	April 3	1948	April 11	1920	April 16	1892	April 11
1975	April 28	1947	April 19	1919	April 5	1891	April 21
1974	April 20	1946	April 1	1918	April 14	1890	April 16
1973	April 4	1945	March 30	1917	April 18	1889	April 1
1972	April 26	1944	April 23	1916	April 19	1888	April 25
1971	April 16	1943	April 12	1915	April 17	1887	April 14
1970	April 18	1942	April 4	1914	April 17