SEASONAL NAO INDEX BASED ON RAW ANOMALIES DJF MAM JJA SON 1874-9999.0 1.9 1.0 3.7 1875 -7.8 -2.3 0.0 -8.6 1876 -1.0 -1.5 5.3 -16.4 1877 0.4 -9.5 -4.9 -0.4 1878 3.6 -6.1 -4.0 -8.0 1879 -13.6 1.7 -3.4 -5.5 1880 -2.9 -1.1 -4.7 -11.2 1881 -23.7 -9.0 0.8 -3.5 1882 7.7 1.2 -0.1 2.5 1883 3.6 -4.2 -4.6 4.5 1884 4.0 -2.1 -2.2 -0.7 1885 -2.3 -1.2 -4.2 -2.1 1886 -4.3 -7.3 3.7 1.3 1887 5.6 -9.5 -5.2 -9.8 1888 -14.3 -7.9 -5.6 -5.1 1889 4.5 1.0 0.5 0.9 1890 9.2 4.2 2.5 4.4 1891 -2.1 -7.6 -6.3 2.8 1892 -1.6 -9.0 -3.8 -2.8 1893 -7.9 -3.3 -6.4 -5.2 1894 14.3 3.3 1.8 -7.2 1895 -16.0 -0.8 -3.2 -5.3 1896 -1.6 8.4 -1.0 -6.6 1897 2.5 6.2 -3.5 -5.7 1898 8.5 0.3 -1.7 -0.7 1899 -4.4 -8.7 -0.9 -0.7 1900 -5.3 -4.6 -3.3 3.2 1901 -4.1 -2.4 2.7 -2.5 1902 -7.5 -2.9 -9.6 -3.6 1903 7.5 7.7 -5.1 -3.1 1904 8.0 7.0 -4.5 -0.4 1905 2.9 1.3 -1.5 -3.6 1906 9.6 -2.2 -3.1 1.2 1907 7.7 4.0 -4.3 1.1 1908 8.3 1.8 -1.6 -2.3 1909 6.3 -8.6 2.4 -3.5 1910 10.0 3.7 -4.1 -9.0 1911 3.6 1.4 -4.3 -2.3 1912 -5.6 4.0 -4.0 -1.4 1913 5.9 10.9 0.3 1.4 1914 5.2 7.6 1.4 -1.3 1915 6.4 -5.3 -5.8 -8.3 1916 5.9 -6.1 -3.8 0.6 1917 -13.4 -8.0 -2.2 7.3 1918 -6.2 0.6 -1.6 2.5 1919 -3.1 -2.7 3.1 -7.9 1920 14.3 9.1 1.6 4.3 1921 1.9 9.7 -0.7 -3.7 1922 14.4 1.5 5.5 -6.3 1923 10.9 -1.6 2.3 4.0 1924 2.6 -11.6 2.2 2.8 1925 15.2 1.8 3.3 -6.5 1926 -3.6 -1.3 -1.1 -2.9 1927 3.6 1.9 -1.6 -5.7 1928 5.3 -5.3 -4.2 3.3 1929 -9.9 -6.0 -1.8 7.7 1930 9.7 -0.2 2.0 -1.8 1931 8.7 -7.8 -3.3 0.9 1932 -6.1 -4.7 0.3 3.1 1933 1.2 -2.4 5.3 -5.0 1934 3.9 4.5 -0.4 3.1 1935 4.5 -7.2 5.1 7.3 1936 -15.8 -4.0 2.3 3.4 1937 7.3 -2.3 0.8 -4.4 1938 1.4 3.0 3.7 12.5 1939 3.5 -0.1 -0.7 -5.3 1940 -14.7 -4.2 2.1 1.5 1941 -10.2 -6.3 1.0 -4.7 1942 -2.3 -6.2 0.5 0.8 1943 6.0 7.0 -1.9 5.3 1944 4.0 -4.8 -2.0 3.7 1945 3.2 -2.0 1.0 -7.9 1946 -0.2 1.0 5.7 -4.7 1947 -8.3 -1.9 -0.5 -2.6 1948 -2.9 5.4 -2.8 -1.0 1949 8.4 2.2 -4.9 1.1 1950 4.8 -0.3 0.4 3.5 1951 3.4 -10.7 -2.2 0.6 1952 7.4 -4.3 -1.2 -7.1 1953 -2.6 -5.0 3.5 7.6 1954 6.1 -1.0 2.8 7.6 1955 -5.9 -5.3 1.8 -4.4 1956 -8.2 4.3 -2.2 3.2 1957 6.8 -3.3 -5.2 -1.8 1958 -2.9 -5.7 -5.2 2.9 1959 -5.6 3.0 2.1 2.9 1960 -8.6 -0.7 -2.5 -4.4 1961 8.4 -1.7 5.9 5.6 1962 -1.3 -10.0 -1.5 -2.1 1963 -18.9 6.3 -2.9 4.6 1964 -12.2 1.0 -0.5 0.9 1965 -10.6 -0.3 1.5 -5.8 1966 -13.9 1.3 -1.2 -5.4 1967 3.4 4.7 2.5 5.2 1968 -5.6 -1.7 -3.5 -9.8 1969 -18.6 -6.0 1.8 2.9 1970 -1.9 1.0 1.1 -0.8 1971 -2.9 0.7 -1.1 -0.5 1972 4.3 7.2 4.4 -2.3 1973 10.8 -2.7 4.2 -5.2 1974 9.4 -0.9 1.5 2.0 1975 6.1 -2.3 -0.5 2.9 1976 4.7 8.8 -1.8 -0.7 1977 -12.6 -1.5 -1.9 0.3 1978 -7.0 4.0 -2.1 5.1 1979 -14.8 -0.5 1.5 3.4 1980 -0.5 -3.0 -1.8 -7.0 1981 7.1 -5.0 0.3 -2.5 1982 -3.1 5.5 -1.4 7.0 1983 8.9 1.2 2.1 -5.2 1984 12.8 -3.5 0.2 2.7 1985 -8.4 -0.6 0.5 -6.8 1986 -7.0 10.5 -1.5 8.7 1987 -6.3 -0.5 -4.4 1.3 1988 -2.2 -5.7 3.3 -5.1 1989 16.2 8.7 2.3 -0.3 1990 11.7 8.1 2.0 -2.4 1991 5.6 2.1 1.4 1.7 1992 3.8 8.4 3.0 2.7 1993 8.8 0.6 -1.6 -4.7 1994 5.9 10.8 3.5 -2.1 1995 13.6 -1.1 -3.7 -7.0 1996 -9.5 -11.2 2.6 3.9 1997 -2.5 -2.5 -1.3 -4.5 1998 -1.4 0.9 0.5 0.0 1999 12.8 -0.6 -2.8 3.9 2000 12.1 -1.2 -2.1 5.4 2001 -5.7 -1.8 -0.5 1.4 2002 -1.6 6.5 3.7 -6.8 2003 -0.7 -0.9 -1.9 0.4 2004 -7.3 5.7 -2.5 -1.4 2005 6.7 -8.1 0.3-9999.0