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
1911 26.72%
1912 33.70%
1913 27.24%
1914 16.84%
1915 21.30%
1916 21.30%
1917 34.08%
1918 31.92%
1919 16.82%
1920 28.70%
1921 24.62%
1922 18.74%
1923 13.04%
1924 16.74%
1925 18.06%
1926 19.38%
1927 14.10%
1928 14.50%
1929 17.70%
1930 14.06%
1931 24.86%
1932 31.86%
1933 15.92%
1934 34.40%
1935 25.46%
1936 22.44%
1937 25.74%
1938 14.40%
1939 13.26%
1940 22.26%
1941 16.92%
1942 21.14%
1943 12.88%
1944 9.94%
1945 9.80%
1946 10.44%
1947 8.64%
1948 15.34%
1949 29.60%
1950 21.36%
1951 19.88%
1952 19.98%
1953 13.82%
1954 24.68%
1955 16.18%
1956 20.90%
1957 14.80%
1958 21.62%
1959 12.12%
1960 21.08%
1961 12.28%
1962 12.46%
1963 12.68%
1964 18.40%
1965 14.04%
1966 11.90%
1967 14.02%
1968 9.58%
1969 16.16%
1970 17.04%
1971 9.02%
1972 11.30%
1973 27.94%
1974 24.02%
1975 9.80%
1976 17.14%
1977 34.48%
1978 32.72%
1979 28.68%
1980 11.86%
1981 28.66%
1982 13.06%
1983 29.20%
1984 20.48%
1985 20.46%
1986 14.72%
1987 19.18%
1988 12.14%
1989 10.02%
1990 15.68%
1991 18.40%
1992 24.52%
1993 21.06%
1994 13.42%
1995 22.26%
1996 30.56%
1997 21.76%
1998 25.72%
1999 35.50%
2000 38.40%
2001 18.12%
2002 27.34%
2003 20.22%
2004 17.78%
2005 29.74%
2006 28.80%
2007 17.46%
2008 19.08%
2009 20.46%
2010 25.22%
2011 17.58%
2012 38.98%
2013 15.18%

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.