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 33.82%
1911 17.92%
1912 38.34%
1913 15.80%
1914 15.88%
1915 7.06%
1916 28.56%
1917 45.84%
1918 10.06%
1919 7.56%
1920 8.76%
1921 35.72%
1922 9.06%
1923 16.56%
1924 36.60%
1925 7.86%
1926 24.40%
1927 9.52%
1928 8.32%
1929 30.56%
1930 12.74%
1931 58.44%
1932 8.54%
1933 19.24%
1934 36.08%
1935 9.66%
1936 20.08%
1937 13.12%
1938 20.40%
1939 17.66%
1940 12.34%
1941 22.50%
1942 5.44%
1943 8.36%
1944 6.68%
1945 8.96%
1946 10.54%
1947 3.00%
1948 11.02%
1949 14.44%
1950 46.38%
1951 53.44%
1952 15.30%
1953 17.44%
1954 9.24%
1955 8.58%
1956 13.08%
1957 9.76%
1958 13.38%
1959 10.34%
1960 17.20%
1961 11.28%
1962 4.80%
1963 15.50%
1964 14.78%
1965 16.14%
1966 16.28%
1967 8.44%
1968 13.16%
1969 6.02%
1970 4.74%
1971 8.94%
1972 36.42%
1973 25.46%
1974 4.26%
1975 7.18%
1976 25.32%
1977 14.90%
1978 24.26%
1979 34.20%
1980 13.56%
1981 18.96%
1982 17.58%
1983 21.30%
1984 16.34%
1985 20.86%
1986 22.78%
1987 44.36%
1988 21.12%
1989 20.10%
1990 22.34%
1991 17.88%
1992 6.18%
1993 38.70%
1994 14.10%
1995 8.98%
1996 35.86%
1997 8.84%
1998 51.44%
1999 46.94%
2000 13.02%
2001 28.06%
2002 17.76%
2003 4.80%
2004 11.80%
2005 29.70%
2006 43.26%
2007 24.84%
2008 28.12%
2009 21.78%
2010 52.78%
2011 13.22%
2012 51.80%
2013 16.60%
2014 49.40%

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.