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 24.28%
1911 28.38%
1912 33.92%
1913 12.28%
1914 20.18%
1915 29.22%
1916 19.66%
1917 40.02%
1918 18.12%
1919 29.16%
1920 21.00%
1921 36.06%
1922 10.02%
1923 15.88%
1924 27.22%
1925 20.52%
1926 6.90%
1927 23.02%
1928 7.58%
1929 17.70%
1930 6.90%
1931 15.94%
1932 10.60%
1933 36.30%
1934 37.98%
1935 18.06%
1936 23.92%
1937 7.50%
1938 27.58%
1939 19.32%
1940 23.02%
1941 37.34%
1942 18.98%
1943 13.30%
1944 7.14%
1945 16.96%
1946 22.16%
1947 5.32%
1948 7.12%
1949 15.66%
1950 15.20%
1951 25.38%
1952 16.04%
1953 23.10%
1954 53.68%
1955 18.66%
1956 35.74%
1957 24.72%
1958 25.96%
1959 8.22%
1960 16.96%
1961 28.24%
1962 5.84%
1963 25.82%
1964 12.36%
1965 8.30%
1966 21.02%
1967 6.88%
1968 31.88%
1969 10.52%
1970 6.18%
1971 5.22%
1972 4.32%
1973 29.36%
1974 18.46%
1975 14.62%
1976 26.98%
1977 6.86%
1978 15.40%
1979 39.38%
1980 10.06%
1981 12.88%
1982 7.68%
1983 31.14%
1984 6.18%
1985 19.68%
1986 24.02%
1987 18.06%
1988 9.70%
1989 21.82%
1990 13.48%
1991 25.22%
1992 23.54%
1993 26.74%
1994 10.54%
1995 11.94%
1996 14.38%
1997 21.20%
1998 39.26%
1999 30.88%
2000 18.78%
2001 18.92%
2002 11.84%
2003 13.38%
2004 19.90%
2005 19.98%
2006 42.06%
2007 27.70%
2008 19.82%
2009 21.26%
2010 14.68%
2011 38.36%
2012 57.44%

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.