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 Warm Cold
1910 24.60% 8.40%
1911 0.00% 61.00%
1912 0.00% 41.90%
1913 2.80% 27.80%
1914 2.90% 0.00%
1915 0.00% 11.50%
1916 0.00% 53.60%
1917 5.60% 5.30%
1918 2.80% 8.50%
1919 8.30% 8.20%
1920 2.90% 36.50%
1921 11.20% 0.00%
1922 0.00% 44.30%
1923 0.00% 13.70%
1924 14.00% 0.00%
1925 0.00% 0.00%
1926 57.80% 0.00%
1927 0.00% 5.70%
1928 11.20% 0.00%
1929 11.30% 0.00%
1930 2.80% 8.10%
1931 28.30% 0.00%
1932 0.00% 8.10%
1933 2.70% 3.00%
1934 66.20% 0.00%
1935 2.90% 2.70%
1936 38.60% 0.00%
1937 0.00% 0.00%
1938 0.00% 16.80%
1939 43.80% 0.00%
1940 19.40% 0.00%
1941 0.00% 11.40%
1942 0.00% 0.00%
1943 0.00% 0.00%
1944 0.00% 33.50%
1945 0.00% 2.70%
1946 0.00% 0.00%
1947 0.00% 0.00%
1948 0.00% 38.00%
1949 0.00% 2.80%
1950 8.40% 0.00%
1951 0.00% 8.40%
1952 0.00% 17.00%
1953 0.00% 2.70%
1954 8.20% 5.50%
1955 0.00% 16.80%
1956 0.00% 2.70%
1957 0.00% 13.50%
1958 33.80% 0.00%
1959 56.00% 0.00%
1960 2.70% 0.00%
1961 2.70% 0.00%
1962 0.00% 3.00%
1963 0.00% 33.40%
1964 0.00% 8.20%
1965 0.00% 39.70%
1966 5.40% 0.00%
1967 0.00% 0.00%
1968 0.00% 0.00%
1969 0.00% 3.00%
1970 2.70% 0.00%
1971 0.00% 44.10%
1972 0.00% 5.50%
1973 0.00% 14.40%
1974 0.00% 2.80%
1975 0.00% 52.20%
1976 5.70% 2.80%
1977 0.00% 0.00%
1978 0.00% 14.10%
1979 0.00% 0.00%
1980 0.00% 0.00%
1981 16.30% 0.00%
1982 0.00% 80.40%
1983 0.00% 46.80%
1984 11.30% 16.20%
1985 0.00% 11.20%
1986 13.70% 0.00%
1987 18.80% 0.00%
1988 30.10% 0.00%
1989 2.90% 0.00%
1990 0.00% 0.00%
1991 2.70% 0.00%
1992 38.00% 0.00%
1993 0.00% 21.70%
1994 0.00% 0.00%
1995 0.00% 0.00%
1996 20.00% 0.00%
1997 25.60% 0.00%
1998 0.00% 58.10%
1999 5.40% 0.00%
2000 11.30% 0.00%
2001 35.80% 0.00%
2002 27.50% 0.00%
2003 39.00% 0.00%
2004 10.90% 0.00%
2005 0.00% 2.70%
2006 14.20% 2.80%
2007 42.20% 0.00%
2008 28.70% 0.00%
2009 14.50% 0.00%
2010 0.00% 11.20%
2011 2.70% 5.70%
2012 58.40% 0.00%
2013 47.50% 0.00%
2014 97.00% 0.00%

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.