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 13.32%
1911 24.62%
1912 23.76%
1913 19.34%
1914 25.50%
1915 10.52%
1916 35.28%
1917 16.26%
1918 30.34%
1919 19.94%
1920 19.20%
1921 15.10%
1922 15.70%
1923 16.86%
1924 15.00%
1925 11.46%
1926 8.04%
1927 8.68%
1928 12.26%
1929 19.28%
1930 27.06%
1931 20.74%
1932 25.96%
1933 25.94%
1934 19.12%
1935 16.08%
1936 12.80%
1937 44.58%
1938 7.54%
1939 12.44%
1940 32.26%
1941 9.52%
1942 16.48%
1943 10.56%
1944 15.50%
1945 7.20%
1946 7.70%
1947 12.02%
1948 17.38%
1949 38.26%
1950 32.00%
1951 6.82%
1952 21.44%
1953 26.18%
1954 13.64%
1955 13.40%
1956 18.32%
1957 18.02%
1958 10.36%
1959 6.84%
1960 7.56%
1961 16.28%
1962 11.84%
1963 25.32%
1964 14.16%
1965 11.06%
1966 14.76%
1967 11.20%
1968 4.94%
1969 19.86%
1970 18.06%
1971 7.68%
1972 7.62%
1973 12.52%
1974 18.54%
1975 6.92%
1976 11.42%
1977 30.36%
1978 31.34%
1979 39.76%
1980 12.62%
1981 24.74%
1982 18.74%
1983 16.12%
1984 12.34%
1985 17.66%
1986 22.82%
1987 9.36%
1988 8.66%
1989 17.32%
1990 31.28%
1991 11.36%
1992 17.22%
1993 18.04%
1994 22.36%
1995 13.82%
1996 14.08%
1997 14.46%
1998 22.26%
1999 17.90%
2000 13.42%
2001 9.34%
2002 17.20%
2003 24.10%
2004 11.32%
2005 20.32%
2006 37.84%
2007 15.20%
2008 8.92%
2009 12.34%
2010 15.22%
2011 10.04%
2012 22.54%
2013 14.46%
2014 20.06%
2015 12.56%

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.