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 34.68%
1911 16.96%
1912 36.82%
1913 17.18%
1914 17.16%
1915 7.56%
1916 28.16%
1917 46.08%
1918 6.96%
1919 5.66%
1920 8.80%
1921 37.60%
1922 9.10%
1923 16.16%
1924 36.84%
1925 8.68%
1926 25.34%
1927 10.90%
1928 6.28%
1929 31.62%
1930 13.20%
1931 57.92%
1932 7.14%
1933 19.84%
1934 35.54%
1935 10.38%
1936 24.12%
1937 16.94%
1938 20.50%
1939 17.32%
1940 11.48%
1941 21.58%
1942 5.68%
1943 8.36%
1944 6.18%
1945 8.08%
1946 10.02%
1947 3.30%
1948 11.02%
1949 14.82%
1950 47.42%
1951 53.62%
1952 15.46%
1953 16.66%
1954 10.12%
1955 9.26%
1956 13.44%
1957 11.68%
1958 14.42%
1959 9.54%
1960 16.82%
1961 12.14%
1962 5.32%
1963 14.84%
1964 15.66%
1965 18.56%
1966 15.88%
1967 9.66%
1968 12.14%
1969 7.48%
1970 5.20%
1971 9.00%
1972 38.76%
1973 27.20%
1974 4.18%
1975 7.52%
1976 26.68%
1977 19.48%
1978 24.02%
1979 34.56%
1980 13.56%
1981 16.92%
1982 19.08%
1983 22.92%
1984 16.96%
1985 24.36%
1986 23.30%
1987 43.10%
1988 20.58%
1989 20.86%
1990 19.72%
1991 18.94%
1992 8.26%
1993 41.48%
1994 12.72%
1995 9.84%
1996 39.36%
1997 8.96%
1998 51.02%
1999 46.36%
2000 14.46%
2001 31.98%
2002 19.32%
2003 4.62%
2004 15.24%
2005 29.62%
2006 43.52%
2007 24.84%
2008 31.50%
2009 19.36%
2010 53.48%
2011 15.04%
2012 54.46%

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.