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 19.42%
1911 39.06%
1912 16.88%
1913 12.64%
1914 22.22%
1915 22.14%
1916 36.24%
1917 19.04%
1918 6.72%
1919 19.12%
1920 15.22%
1921 11.32%
1922 27.70%
1923 18.82%
1924 40.86%
1925 4.88%
1926 41.68%
1927 13.54%
1928 13.42%
1929 28.54%
1930 12.42%
1931 14.88%
1932 19.46%
1933 20.88%
1934 35.90%
1935 6.00%
1936 20.32%
1937 9.58%
1938 20.96%
1939 24.86%
1940 28.12%
1941 44.22%
1942 8.12%
1943 8.68%
1944 16.28%
1945 11.42%
1946 15.76%
1947 9.02%
1948 28.30%
1949 14.90%
1950 22.74%
1951 10.16%
1952 15.08%
1953 11.70%
1954 24.22%
1955 25.58%
1956 9.60%
1957 16.00%
1958 20.72%
1959 55.44%
1960 9.30%
1961 7.42%
1962 27.16%
1963 8.44%
1964 4.06%
1965 19.34%
1966 15.10%
1967 4.64%
1968 0.00%
1969 15.96%
1970 10.84%
1971 13.76%
1972 3.44%
1973 19.00%
1974 13.06%
1975 15.22%
1976 18.24%
1977 18.54%
1978 14.30%
1979 11.24%
1980 11.94%
1981 28.24%
1982 49.18%
1983 62.10%
1984 19.16%
1985 9.04%
1986 25.12%
1987 15.34%
1988 12.66%
1989 11.34%
1990 20.78%
1991 7.30%
1992 28.98%
1993 6.72%
1994 0.00%
1995 39.12%
1996 58.62%
1997 40.18%
1998 48.38%
1999 2.22%
2000 11.66%
2001 22.94%
2002 28.52%
2003 28.52%
2004 27.34%
2005 40.48%
2006 20.12%
2007 30.46%
2008 27.12%
2009 11.48%
2010 23.94%
2011 9.46%
2012 44.38%

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.