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 11.90%
1911 27.56%
1912 34.22%
1913 7.64%
1914 15.68%
1915 20.64%
1916 10.26%
1917 27.32%
1918 5.58%
1919 12.58%
1920 23.10%
1921 34.96%
1922 23.02%
1923 7.30%
1924 21.02%
1925 27.34%
1926 15.52%
1927 35.32%
1928 19.48%
1929 31.16%
1930 14.62%
1931 21.92%
1932 25.56%
1933 29.42%
1934 8.14%
1935 5.08%
1936 16.44%
1937 10.12%
1938 15.76%
1939 10.52%
1940 36.48%
1941 19.24%
1942 6.30%
1943 23.04%
1944 9.92%
1945 7.08%
1946 16.62%
1947 17.00%
1948 21.60%
1949 25.16%
1950 8.18%
1951 11.40%
1952 7.36%
1953 19.70%
1954 35.02%
1955 18.74%
1956 12.66%
1957 15.26%
1958 38.44%
1959 15.76%
1960 25.58%
1961 15.78%
1962 10.60%
1963 27.54%
1964 32.18%
1965 12.40%
1966 30.74%
1967 15.48%
1968 26.96%
1969 32.96%
1970 7.38%
1971 12.84%
1972 16.00%
1973 13.68%
1974 9.76%
1975 29.06%
1976 36.72%
1977 6.62%
1978 15.88%
1979 33.74%
1980 4.76%
1981 26.94%
1982 13.42%
1983 29.28%
1984 11.34%
1985 12.48%
1986 21.16%
1987 3.44%
1988 18.66%
1989 23.96%
1990 47.20%
1991 34.32%
1992 20.16%
1993 4.34%
1994 14.04%
1995 14.80%
1996 16.94%
1997 11.48%
1998 45.30%
1999 27.76%
2000 17.80%
2001 15.02%
2002 26.08%
2003 23.54%
2004 20.30%
2005 10.02%
2006 28.00%
2007 50.18%
2008 14.74%
2009 16.44%
2010 17.68%
2011 35.54%
2012 39.00%
2013 35.92%
2014 23.04%

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.