U.S. Climate Extremes Index (CEI): Graph

NCDC transitioned to the nClimDiv dataset on Thursday, March 13, 2014. This was coincident with the release of the February 2014 monthly monitoring report. For details on this transition, please visit our public FTP site and our U.S. Climate Divisional Database site.

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: xml csv json
Year Percent
1910 6.30%
1911 21.00%
1912 40.40%
1913 29.30%
1914 22.20%
1915 3.70%
1916 47.20%
1917 15.90%
1918 52.40%
1919 21.90%
1920 15.80%
1921 12.00%
1922 17.00%
1923 29.80%
1924 4.80%
1925 4.10%
1926 4.90%
1927 5.20%
1928 3.10%
1929 24.40%
1930 47.70%
1931 21.20%
1932 40.80%
1933 53.40%
1934 29.90%
1935 9.40%
1936 14.70%
1937 73.20%
1938 1.40%
1939 14.70%
1940 51.10%
1941 1.90%
1942 5.90%
1943 5.00%
1944 18.50%
1945 6.00%
1946 4.20%
1947 9.10%
1948 25.10%
1949 65.20%
1950 51.80%
1951 0.80%
1952 27.00%
1953 45.30%
1954 5.30%
1955 8.00%
1956 7.90%
1957 14.30%
1958 12.40%
1959 3.30%
1960 6.10%
1961 14.90%
1962 4.30%
1963 26.40%
1964 11.10%
1965 3.40%
1966 19.90%
1967 8.90%
1968 2.00%
1969 18.10%
1970 25.40%
1971 3.20%
1972 4.30%
1973 11.50%
1974 12.20%
1975 0.70%
1976 3.80%
1977 49.10%
1978 48.50%
1979 75.40%
1980 0.70%
1981 33.00%
1982 23.10%
1983 11.70%
1984 9.80%
1985 26.70%
1986 41.80%
1987 6.40%
1988 9.00%
1989 35.40%
1990 51.60%
1991 3.50%
1992 19.30%
1993 7.90%
1994 43.00%
1995 3.20%
1996 4.40%
1997 0.40%
1998 12.50%
1999 22.70%
2000 14.30%
2001 4.80%
2002 20.30%
2003 35.70%
2004 4.70%
2005 6.60%
2006 75.50%
2007 9.20%
2008 2.30%
2009 12.90%
2010 10.30%
2011 2.20%
2012 52.90%
2013 7.20%
2014 27.00%
2015 17.00%

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.