U.S. Climate Extremes Index (CEI)

Graph

Choose a period/season and an indicator from the options below and click "Plot" to create a time series graph. Note that the sixth indicator (Step 6) is not calculated for the spring (March-May), winter (December-February) and cold (October-March) seasons since most months during these periods are outside of the traditional hurricane season.



Move mouse towards an axis until highlighted. Left-click mouse to pan. Shift key + left-click to zoom.

Year Percent
1910 16.08%
1911 20.86%
1912 27.10%
1913 25.04%
1914 38.88%
1915 14.44%
1916 19.28%
1917 45.24%
1918 17.24%
1919 1.06%
1920 24.92%
1921 30.46%
1922 14.96%
1923 27.02%
1924 52.34%
1925 9.84%
1926 45.90%
1927 7.78%
1928 15.22%
1929 7.36%
1930 16.52%
1931 33.30%
1932 13.56%
1933 10.72%
1934 21.72%
1935 17.14%
1936 10.70%
1937 11.88%
1938 12.00%
1939 5.66%
1940 38.50%
1941 21.86%
1942 12.42%
1943 15.42%
1944 6.72%
1945 20.78%
1946 17.98%
1947 7.38%
1948 11.54%
1949 37.34%
1950 16.78%
1951 5.74%
1952 17.70%
1953 38.36%
1954 19.94%
1955 12.98%
1956 12.60%
1957 21.60%
1958 29.48%
1959 0.00%
1960 8.02%
1961 3.92%
1962 16.04%
1963 25.14%
1964 17.16%
1965 14.96%
1966 13.80%
1967 5.48%
1968 6.40%
1969 2.72%
1970 3.52%
1971 5.58%
1972 44.10%
1973 28.56%
1974 9.24%
1975 14.66%
1976 21.92%
1977 15.22%
1978 35.02%
1979 19.50%
1980 9.26%
1981 4.90%
1982 6.52%
1983 8.16%
1984 4.40%
1985 14.62%
1986 6.02%
1987 5.28%
1988 8.12%
1989 16.96%
1990 49.20%
1991 37.86%
1992 18.70%
1993 5.68%
1994 10.46%
1995 7.82%
1996 29.92%
1997 8.70%
1998 51.36%
1999 39.16%
2000 12.00%
2001 36.82%
2002 34.82%
2003 32.28%
2004 25.84%
2005 29.90%
2006 63.36%
2007 19.68%
2008 35.14%
2009 21.68%
2010 39.00%
2011 72.20%
2012 49.54%

View CEI Data Files

Limitations: Statistics for the most recent period/season are computed from a fraction of the U.S. which has data available at that time. Extreme percentage values can and will likely change as final quality controlled data become available and fill in the data gaps.