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 26.26%
1911 33.50%
1912 36.58%
1913 24.16%
1914 14.22%
1915 27.70%
1916 52.70%
1917 41.82%
1918 8.80%
1919 12.54%
1920 12.40%
1921 19.10%
1922 18.02%
1923 19.58%
1924 29.28%
1925 14.76%
1926 11.62%
1927 31.08%
1928 16.26%
1929 29.32%
1930 7.10%
1931 41.66%
1932 9.10%
1933 17.30%
1934 60.38%
1935 13.52%
1936 21.54%
1937 24.38%
1938 14.62%
1939 27.58%
1940 17.26%
1941 21.90%
1942 12.92%
1943 7.36%
1944 18.38%
1945 11.40%
1946 14.30%
1947 8.90%
1948 9.74%
1949 9.52%
1950 31.90%
1951 43.54%
1952 13.02%
1953 21.16%
1954 20.66%
1955 22.06%
1956 10.56%
1957 9.98%
1958 8.50%
1959 4.52%
1960 12.72%
1961 16.48%
1962 4.62%
1963 7.80%
1964 15.48%
1965 13.02%
1966 8.70%
1967 7.18%
1968 13.26%
1969 9.16%
1970 8.14%
1971 10.80%
1972 12.96%
1973 13.66%
1974 5.78%
1975 16.62%
1976 16.04%
1977 10.82%
1978 29.52%
1979 14.78%
1980 10.52%
1981 33.26%
1982 23.64%
1983 18.28%
1984 16.42%
1985 21.60%
1986 18.34%
1987 37.88%
1988 34.66%
1989 14.70%
1990 18.28%
1991 14.36%
1992 14.44%
1993 40.94%
1994 18.96%
1995 23.44%
1996 32.40%
1997 13.42%
1998 37.78%
1999 36.92%
2000 15.70%
2001 33.08%
2002 11.86%
2003 15.10%
2004 13.52%
2005 28.28%
2006 36.16%
2007 40.82%
2008 18.92%
2009 18.62%
2010 30.34%
2011 26.34%
2012 49.12%

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.