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 15.94%
1911 10.88%
1912 36.12%
1913 8.78%
1914 17.28%
1915 8.52%
1916 12.50%
1917 40.60%
1918 8.42%
1919 8.44%
1920 11.38%
1921 39.92%
1922 14.06%
1923 6.94%
1924 35.12%
1925 8.66%
1926 17.98%
1927 23.06%
1928 11.60%
1929 29.54%
1930 19.96%
1931 51.50%
1932 7.00%
1933 21.72%
1934 28.14%
1935 8.28%
1936 20.40%
1937 13.90%
1938 31.52%
1939 19.36%
1940 31.00%
1941 24.32%
1942 8.82%
1943 7.62%
1944 11.36%
1945 15.92%
1946 22.18%
1947 4.12%
1948 3.50%
1949 14.12%
1950 39.56%
1951 26.06%
1952 6.90%
1953 41.02%
1954 36.82%
1955 13.88%
1956 13.68%
1957 10.18%
1958 34.02%
1959 4.98%
1960 17.34%
1961 8.22%
1962 5.72%
1963 33.86%
1964 19.38%
1965 6.20%
1966 18.46%
1967 3.46%
1968 8.56%
1969 15.30%
1970 7.38%
1971 6.48%
1972 17.80%
1973 37.86%
1974 17.76%
1975 15.82%
1976 32.90%
1977 7.62%
1978 34.60%
1979 48.00%
1980 10.58%
1981 10.66%
1982 16.68%
1983 12.82%
1984 8.46%
1985 21.80%
1986 14.94%
1987 19.36%
1988 22.90%
1989 24.94%
1990 41.54%
1991 24.12%
1992 8.14%
1993 35.74%
1994 17.14%
1995 8.16%
1996 36.30%
1997 16.56%
1998 47.48%
1999 29.22%
2000 15.00%
2001 12.32%
2002 24.66%
2003 21.62%
2004 26.64%
2005 15.78%
2006 31.30%
2007 28.84%
2008 31.86%
2009 26.02%
2010 20.90%
2011 32.02%
2012 56.10%

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.