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 33.48%
1911 19.26%
1912 23.38%
1913 15.24%
1914 18.28%
1915 23.08%
1916 18.22%
1917 33.78%
1918 18.94%
1919 7.64%
1920 22.46%
1921 18.98%
1922 17.90%
1923 17.74%
1924 27.84%
1925 23.10%
1926 32.82%
1927 18.04%
1928 13.92%
1929 17.04%
1930 7.78%
1931 26.78%
1932 11.56%
1933 13.14%
1934 38.20%
1935 18.22%
1936 15.28%
1937 9.46%
1938 16.20%
1939 13.30%
1940 21.34%
1941 25.14%
1942 17.42%
1943 14.68%
1944 12.78%
1945 18.12%
1946 17.16%
1947 22.62%
1948 16.36%
1949 6.16%
1950 21.02%
1951 17.60%
1952 12.02%
1953 12.06%
1954 13.98%
1955 28.44%
1956 18.78%
1957 17.90%
1958 19.78%
1959 8.60%
1960 22.34%
1961 11.70%
1962 7.10%
1963 15.08%
1964 17.76%
1965 16.34%
1966 12.98%
1967 19.76%
1968 7.42%
1969 12.84%
1970 11.28%
1971 18.72%
1972 14.48%
1973 26.82%
1974 18.20%
1975 24.10%
1976 9.32%
1977 29.70%
1978 10.62%
1979 13.44%
1980 15.72%
1981 13.02%
1982 8.58%
1983 33.36%
1984 22.48%
1985 23.34%
1986 20.18%
1987 28.20%
1988 15.88%
1989 18.42%
1990 14.86%
1991 31.06%
1992 26.88%
1993 22.86%
1994 17.44%
1995 19.22%
1996 25.90%
1997 19.00%
1998 22.02%
1999 12.06%
2000 27.20%
2001 15.88%
2002 21.26%
2003 15.30%
2004 33.60%
2005 15.34%
2006 24.58%
2007 31.10%
2008 16.26%
2009 13.78%
2010 23.02%
2011 34.12%
2012 44.42%
2013 28.22%

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.