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 37.32%
1911 22.62%
1912 46.96%
1913 31.76%
1914 30.66%
1915 37.52%
1916 31.10%
1917 27.56%
1918 14.52%
1919 35.40%
1920 32.90%
1921 29.04%
1922 22.68%
1923 28.96%
1924 26.94%
1925 9.42%
1926 15.16%
1927 11.90%
1928 11.80%
1929 21.80%
1930 16.32%
1931 18.46%
1932 27.88%
1933 14.42%
1934 51.48%
1935 16.22%
1936 8.82%
1937 14.96%
1938 9.10%
1939 14.44%
1940 13.54%
1941 43.66%
1942 19.58%
1943 11.24%
1944 16.82%
1945 9.60%
1946 4.56%
1947 14.46%
1948 16.06%
1949 15.10%
1950 21.24%
1951 13.50%
1952 6.74%
1953 14.10%
1954 29.16%
1955 20.82%
1956 33.64%
1957 20.68%
1958 13.94%
1959 10.44%
1960 10.14%
1961 11.56%
1962 3.98%
1963 11.10%
1964 25.32%
1965 22.52%
1966 11.60%
1967 10.00%
1968 8.68%
1969 5.70%
1970 9.02%
1971 12.48%
1972 8.54%
1973 13.80%
1974 6.36%
1975 21.40%
1976 9.48%
1977 9.64%
1978 13.82%
1979 13.80%
1980 12.52%
1981 26.62%
1982 18.58%
1983 31.30%
1984 29.74%
1985 20.98%
1986 25.40%
1987 17.32%
1988 10.78%
1989 32.40%
1990 15.00%
1991 10.68%
1992 23.00%
1993 24.38%
1994 19.00%
1995 14.56%
1996 29.46%
1997 20.14%
1998 21.96%
1999 22.58%
2000 40.56%
2001 22.78%
2002 34.24%
2003 52.04%
2004 7.96%
2005 28.32%
2006 27.40%
2007 36.28%
2008 15.58%
2009 10.78%
2010 14.84%
2011 23.70%
2012 56.48%

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.