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% 0.00%
1911 0.00% 9.80%
1912 36.30% 0.00%
1913 43.90% 0.00%
1914 5.20% 0.00%
1915 0.00% 0.00%
1916 25.20% 0.00%
1917 0.00% 0.00%
1918 0.00% 10.70%
1919 0.00% 2.00%
1920 0.00% 0.00%
1921 0.00% 0.00%
1922 0.00% 8.40%
1923 0.00% 9.80%
1924 0.00% 44.00%
1925 0.00% 22.70%
1926 0.00% 13.10%
1927 20.70% 0.00%
1928 0.00% 0.00%
1929 0.00% 45.80%
1930 0.00% 37.70%
1931 0.00% 38.00%
1932 4.50% 3.40%
1933 8.40% 8.60%
1934 0.00% 52.30%
1935 0.00% 32.20%
1936 0.00% 20.60%
1937 15.90% 12.30%
1938 0.00% 0.00%
1939 0.00% 37.20%
1940 0.00% 6.50%
1941 14.10% 4.60%
1942 16.00% 0.00%
1943 5.60% 0.00%
1944 0.00% 31.50%
1945 5.20% 1.80%
1946 3.60% 0.00%
1947 0.00% 0.00%
1948 67.00% 4.00%
1949 7.40% 4.00%
1950 19.60% 0.00%
1951 34.20% 0.00%
1952 0.00% 7.80%
1953 16.40% 1.80%
1954 6.30% 14.70%
1955 10.20% 5.20%
1956 37.00% 0.00%
1957 16.90% 0.00%
1958 17.00% 0.70%
1959 9.70% 2.00%
1960 9.70% 7.20%
1961 0.00% 2.00%
1962 0.00% 2.00%
1963 0.00% 0.00%
1964 0.70% 0.00%
1965 15.60% 0.00%
1966 0.00% 14.20%
1967 0.00% 0.00%
1968 6.50% 0.00%
1969 10.40% 0.00%
1970 9.60% 0.00%
1971 43.60% 0.00%
1972 22.00% 0.00%
1973 0.00% 0.00%
1974 9.60% 0.00%
1975 4.50% 0.00%
1976 2.70% 0.00%
1977 0.00% 20.30%
1978 0.00% 0.00%
1979 0.00% 3.80%
1980 7.60% 0.00%
1981 4.60% 0.00%
1982 73.90% 0.00%
1983 86.40% 0.00%
1984 75.10% 0.00%
1985 3.30% 0.00%
1986 0.00% 0.00%
1987 0.00% 36.40%
1988 0.00% 39.00%
1989 0.00% 0.00%
1990 0.70% 28.70%
1991 0.70% 31.60%
1992 0.00% 63.20%
1993 6.80% 2.00%
1994 0.00% 14.90%
1995 25.20% 0.00%
1996 54.50% 0.00%
1997 65.90% 0.00%
1998 35.60% 0.00%
1999 18.60% 0.00%
2000 0.00% 3.80%
2001 0.00% 62.30%
2002 0.00% 49.60%
2003 0.00% 41.60%
2004 0.00% 6.20%
2005 0.00% 10.80%
2006 12.20% 0.00%
2007 0.00% 35.20%
2008 0.00% 15.90%
2009 3.40% 11.90%
2010 3.40% 0.00%
2011 15.10% 0.00%
2012 25.90% 4.00%

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.