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
1911 20.66%
1912 23.98%
1913 18.70%
1914 16.40%
1915 20.32%
1916 22.34%
1917 26.74%
1918 32.86%
1919 17.06%
1920 25.74%
1921 19.92%
1922 17.88%
1923 16.16%
1924 15.40%
1925 10.98%
1926 14.96%
1927 15.14%
1928 11.74%
1929 26.50%
1930 9.46%
1931 26.16%
1932 35.02%
1933 25.74%
1934 30.90%
1935 16.38%
1936 31.64%
1937 34.64%
1938 12.92%
1939 8.64%
1940 23.20%
1941 16.76%
1942 15.60%
1943 13.22%
1944 14.08%
1945 7.90%
1946 7.86%
1947 8.58%
1948 13.98%
1949 36.78%
1950 28.34%
1951 13.06%
1952 21.48%
1953 18.78%
1954 24.92%
1955 15.70%
1956 16.82%
1957 21.12%
1958 19.74%
1959 16.20%
1960 11.82%
1961 16.76%
1962 11.16%
1963 22.54%
1964 24.02%
1965 14.10%
1966 13.32%
1967 11.32%
1968 8.30%
1969 18.18%
1970 17.50%
1971 10.26%
1972 10.70%
1973 17.04%
1974 15.04%
1975 11.20%
1976 15.98%
1977 31.16%
1978 36.72%
1979 41.48%
1980 12.28%
1981 28.28%
1982 14.42%
1983 30.10%
1984 20.06%
1985 17.72%
1986 15.62%
1987 21.12%
1988 8.98%
1989 11.42%
1990 13.42%
1991 15.54%
1992 31.56%
1993 23.86%
1994 14.46%
1995 19.30%
1996 20.18%
1997 18.00%
1998 30.86%
1999 31.10%
2000 30.70%
2001 13.60%
2002 27.52%
2003 22.44%
2004 11.06%
2005 25.66%
2006 24.00%
2007 15.80%
2008 14.84%
2009 17.38%
2010 25.82%
2011 16.28%
2012 32.40%
2013 17.94%

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.