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 24.00%
1911 27.12%
1912 34.04%
1913 19.28%
1914 20.22%
1915 21.96%
1916 29.28%
1917 34.34%
1918 11.26%
1919 19.46%
1920 18.78%
1921 28.36%
1922 18.98%
1923 17.70%
1924 31.20%
1925 14.70%
1926 19.58%
1927 20.20%
1928 12.08%
1929 26.24%
1930 13.90%
1931 29.34%
1932 15.04%
1933 22.40%
1934 39.36%
1935 13.98%
1936 18.38%
1937 14.56%
1938 18.32%
1939 18.86%
1940 24.06%
1941 30.04%
1942 12.64%
1943 11.22%
1944 12.24%
1945 11.94%
1946 14.56%
1947 8.50%
1948 16.02%
1949 17.32%
1950 24.96%
1951 24.10%
1952 12.38%
1953 21.98%
1954 29.86%
1955 19.90%
1956 19.82%
1957 15.88%
1958 23.00%
1959 12.56%
1960 13.80%
1961 14.24%
1962 8.20%
1963 17.68%
1964 18.74%
1965 14.22%
1966 16.86%
1967 8.20%
1968 14.72%
1969 12.14%
1970 7.64%
1971 10.18%
1972 14.28%
1973 20.74%
1974 10.64%
1975 17.62%
1976 21.78%
1977 10.48%
1978 20.52%
1979 25.68%
1980 10.98%
1981 21.40%
1982 19.90%
1983 28.80%
1984 16.22%
1985 20.04%
1986 19.76%
1987 22.60%
1988 17.44%
1989 20.04%
1990 24.76%
1991 19.58%
1992 21.48%
1993 25.08%
1994 14.98%
1995 17.96%
1996 32.18%
1997 19.60%
1998 41.72%
1999 27.94%
2000 17.96%
2001 22.88%
2002 21.98%
2003 26.28%
2004 19.74%
2005 24.10%
2006 34.64%
2007 32.02%
2008 20.98%
2009 17.44%
2010 24.60%
2011 29.00%
2012 50.16%

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.