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 15.56%
1911 24.10%
1912 29.06%
1913 26.40%
1914 41.22%
1915 16.56%
1916 19.00%
1917 43.64%
1918 18.30%
1919 2.28%
1920 22.22%
1921 30.36%
1922 11.14%
1923 25.40%
1924 52.04%
1925 9.80%
1926 41.56%
1927 6.70%
1928 10.46%
1929 5.94%
1930 16.40%
1931 34.28%
1932 12.58%
1933 9.54%
1934 20.60%
1935 17.08%
1936 11.02%
1937 13.40%
1938 12.46%
1939 5.84%
1940 39.20%
1941 23.82%
1942 10.22%
1943 15.38%
1944 7.24%
1945 19.94%
1946 18.40%
1947 7.76%
1948 10.72%
1949 34.52%
1950 16.24%
1951 8.30%
1952 16.32%
1953 36.84%
1954 21.20%
1955 12.58%
1956 9.06%
1957 19.78%
1958 30.58%
1959 0.08%
1960 8.30%
1961 1.52%
1962 16.12%
1963 29.88%
1964 18.58%
1965 15.46%
1966 15.14%
1967 5.30%
1968 5.96%
1969 2.76%
1970 3.68%
1971 5.66%
1972 45.50%
1973 31.90%
1974 11.52%
1975 16.52%
1976 24.72%
1977 16.96%
1978 32.88%
1979 19.58%
1980 8.58%
1981 4.82%
1982 5.04%
1983 7.70%
1984 4.30%
1985 13.22%
1986 5.16%
1987 4.00%
1988 5.80%
1989 17.70%
1990 48.38%
1991 39.80%
1992 18.82%
1993 5.86%
1994 10.90%
1995 8.42%
1996 33.34%
1997 9.74%
1998 52.38%
1999 41.18%
2000 12.90%
2001 35.84%
2002 34.94%
2003 30.62%
2004 26.16%
2005 26.36%
2006 64.80%
2007 17.40%
2008 32.74%
2009 20.38%
2010 37.28%
2011 72.08%
2012 50.14%
2013 24.06%
2014 15.88%

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.