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 16.94%
1911 35.26%
1912 30.28%
1913 36.78%
1914 10.48%
1915 5.48%
1916 47.34%
1917 13.76%
1918 8.94%
1919 33.68%
1920 17.08%
1921 6.22%
1922 37.32%
1923 15.02%
1924 25.72%
1925 20.78%
1926 25.04%
1927 12.44%
1928 12.86%
1929 45.96%
1930 26.70%
1931 16.22%
1932 12.50%
1933 19.08%
1934 52.56%
1935 27.06%
1936 17.90%
1937 20.66%
1938 5.16%
1939 23.68%
1940 33.82%
1941 23.64%
1942 8.82%
1943 11.32%
1944 15.76%
1945 8.06%
1946 6.04%
1947 7.68%
1948 52.88%
1949 24.98%
1950 26.34%
1951 15.00%
1952 14.52%
1953 18.66%
1954 13.98%
1955 39.74%
1956 16.22%
1957 8.70%
1958 37.36%
1959 13.48%
1960 3.38%
1961 5.88%
1962 4.52%
1963 4.74%
1964 33.14%
1965 15.10%
1966 14.80%
1967 11.12%
1968 6.26%
1969 6.54%
1970 10.00%
1971 19.74%
1972 7.18%
1973 4.38%
1974 8.32%
1975 23.98%
1976 9.68%
1977 6.04%
1978 3.72%
1979 7.60%
1980 17.14%
1981 23.14%
1982 33.18%
1983 41.24%
1984 36.54%
1985 33.48%
1986 9.00%
1987 38.20%
1988 14.92%
1989 4.76%
1990 21.22%
1991 10.76%
1992 49.90%
1993 18.12%
1994 24.34%
1995 35.20%
1996 44.66%
1997 32.44%
1998 49.84%
1999 15.90%
2000 7.64%
2001 18.30%
2002 24.10%
2003 47.02%
2004 28.84%
2005 13.42%
2006 27.70%
2007 21.70%
2008 6.96%
2009 11.26%
2010 28.42%
2011 13.64%
2012 32.02%

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.