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 19.20%
1911 14.28%
1912 20.30%
1913 11.58%
1914 16.74%
1915 22.02%
1916 14.34%
1917 11.56%
1918 21.22%
1919 7.28%
1920 21.36%
1921 29.22%
1922 21.02%
1923 13.38%
1924 26.18%
1925 23.14%
1926 41.84%
1927 26.72%
1928 15.34%
1929 37.76%
1930 8.50%
1931 43.92%
1932 16.78%
1933 6.84%
1934 12.68%
1935 26.30%
1936 16.80%
1937 6.54%
1938 26.68%
1939 3.24%
1940 21.12%
1941 28.24%
1942 19.70%
1943 6.60%
1944 13.88%
1945 41.82%
1946 17.66%
1947 16.18%
1948 31.08%
1949 6.98%
1950 6.50%
1951 7.82%
1952 6.06%
1953 10.78%
1954 3.76%
1955 40.62%
1956 10.40%
1957 9.48%
1958 35.34%
1959 11.14%
1960 52.22%
1961 18.10%
1962 5.76%
1963 12.96%
1964 23.40%
1965 10.54%
1966 13.60%
1967 21.38%
1968 2.42%
1969 25.94%
1970 5.98%
1971 37.76%
1972 7.34%
1973 30.60%
1974 8.66%
1975 23.66%
1976 15.10%
1977 26.50%
1978 11.50%
1979 15.80%
1980 26.90%
1981 15.12%
1982 3.82%
1983 43.16%
1984 33.52%
1985 21.16%
1986 26.86%
1987 9.26%
1988 12.24%
1989 10.20%
1990 14.60%
1991 41.62%
1992 11.76%
1993 29.16%
1994 12.96%
1995 17.66%
1996 16.06%
1997 9.72%
1998 27.74%
1999 7.86%
2000 21.36%
2001 13.02%
2002 21.66%
2003 39.64%
2004 29.42%
2005 16.50%
2006 13.76%
2007 37.72%
2008 10.16%
2009 11.90%
2010 15.18%
2011 23.04%
2012 54.84%
2013 29.82%

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.