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.

Download: Wet Data | Dry Data
Year Wet Dry
1910 0.00% 24.70%
1911 0.00% 24.70%
1912 5.90% 1.50%
1913 2.70% 1.80%
1914 29.70% 5.00%
1915 33.80% 0.00%
1916 2.80% 2.10%
1917 0.00% 47.90%
1918 0.00% 43.40%
1919 54.20% 0.00%
1920 38.80% 0.00%
1921 0.00% 0.60%
1922 0.00% 0.00%
1923 4.30% 0.00%
1924 0.00% 0.00%
1925 0.00% 35.20%
1926 1.10% 3.10%
1927 13.50% 2.50%
1928 9.70% 0.00%
1929 1.50% 0.00%
1930 0.00% 0.80%
1931 16.40% 0.90%
1932 17.70% 0.00%
1933 0.00% 3.40%
1934 0.00% 36.10%
1935 0.00% 23.80%
1936 10.00% 27.80%
1937 0.00% 18.10%
1938 0.00% 9.60%
1939 0.00% 15.10%
1940 3.30% 9.40%
1941 56.90% 1.90%
1942 43.10% 2.40%
1943 0.00% 12.40%
1944 7.90% 1.30%
1945 28.50% 0.00%
1946 19.10% 0.00%
1947 7.40% 0.90%
1948 4.10% 1.30%
1949 8.60% 0.00%
1950 7.20% 0.50%
1951 13.50% 27.80%
1952 0.00% 33.60%
1953 0.90% 40.20%
1954 0.00% 77.70%
1955 0.00% 62.60%
1956 0.00% 80.90%
1957 11.10% 0.00%
1958 30.30% 0.00%
1959 3.90% 0.00%
1960 4.30% 0.00%
1961 33.60% 0.00%
1962 2.20% 1.70%
1963 0.00% 50.20%
1964 0.00% 29.80%
1965 0.00% 1.80%
1966 1.70% 5.40%
1967 0.00% 4.80%
1968 21.90% 0.00%
1969 3.80% 0.00%
1970 0.00% 0.00%
1971 0.00% 2.30%
1972 0.00% 0.00%
1973 55.00% 0.00%
1974 39.90% 0.00%
1975 25.10% 0.00%
1976 1.10% 1.20%
1977 0.50% 1.80%
1978 1.70% 7.50%
1979 16.30% 0.00%
1980 0.00% 4.30%
1981 0.00% 13.60%
1982 1.10% 0.00%
1983 18.70% 0.00%
1984 3.80% 0.00%
1985 22.60% 0.00%
1986 7.50% 1.20%
1987 45.20% 0.00%
1988 0.00% 0.00%
1989 10.00% 8.70%
1990 6.70% 0.00%
1991 26.90% 1.40%
1992 61.90% 0.00%
1993 33.30% 0.00%
1994 7.10% 0.00%
1995 2.00% 0.00%
1996 0.60% 0.00%
1997 31.50% 0.00%
1998 3.00% 0.50%
1999 8.20% 3.80%
2000 1.40% 22.50%
2001 7.70% 0.50%
2002 6.10% 7.80%
2003 11.40% 2.60%
2004 9.60% 0.00%
2005 13.30% 0.00%
2006 0.00% 35.30%
2007 15.10% 4.60%
2008 17.80% 0.00%
2009 25.20% 0.00%
2010 7.30% 2.20%
2011 0.00% 63.50%
2012 0.00% 39.70%

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.