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 21.00%
1911 18.00%
1912 18.72%
1913 14.34%
1914 17.56%
1915 35.88%
1916 16.00%
1917 26.08%
1918 30.20%
1919 6.62%
1920 20.06%
1921 18.42%
1922 9.24%
1923 14.16%
1924 37.76%
1925 42.82%
1926 26.62%
1927 24.22%
1928 6.60%
1929 15.66%
1930 4.04%
1931 40.26%
1932 6.28%
1933 12.54%
1934 16.40%
1935 16.02%
1936 20.68%
1937 6.34%
1938 20.32%
1939 8.52%
1940 10.90%
1941 28.10%
1942 18.16%
1943 8.96%
1944 13.60%
1945 12.96%
1946 22.80%
1947 29.72%
1948 6.98%
1949 7.16%
1950 10.62%
1951 17.06%
1952 18.24%
1953 15.94%
1954 16.36%
1955 36.12%
1956 25.12%
1957 30.94%
1958 32.62%
1959 4.98%
1960 25.06%
1961 9.82%
1962 8.98%
1963 36.22%
1964 11.10%
1965 8.34%
1966 10.48%
1967 30.76%
1968 15.64%
1969 18.36%
1970 7.76%
1971 22.98%
1972 15.52%
1973 28.66%
1974 39.76%
1975 20.10%
1976 6.96%
1977 21.98%
1978 9.64%
1979 14.70%
1980 20.74%
1981 11.82%
1982 6.42%
1983 38.36%
1984 16.86%
1985 20.66%
1986 19.70%
1987 27.90%
1988 10.66%
1989 12.18%
1990 15.44%
1991 33.34%
1992 15.90%
1993 34.54%
1994 8.84%
1995 18.78%
1996 17.10%
1997 17.88%
1998 10.60%
1999 9.28%
2000 27.66%
2001 12.00%
2002 15.70%
2003 13.10%
2004 24.56%
2005 9.94%
2006 47.56%
2007 28.88%
2008 12.32%
2009 12.48%
2010 11.16%
2011 37.94%
2012 51.84%
2013 28.18%

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.