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 6.10% 8.30%
1911 18.90% 18.50%
1912 0.40% 51.60%
1913 2.30% 16.80%
1914 3.20% 6.40%
1915 1.60% 7.40%
1916 0.80% 45.70%
1917 0.00% 71.20%
1918 1.90% 6.00%
1919 2.70% 15.10%
1920 0.40% 12.10%
1921 43.40% 0.40%
1922 11.20% 15.00%
1923 2.70% 9.00%
1924 0.00% 61.50%
1925 10.30% 0.60%
1926 7.10% 10.80%
1927 15.20% 4.30%
1928 1.20% 2.30%
1929 0.20% 40.00%
1930 0.10% 9.70%
1931 34.10% 1.10%
1932 2.80% 12.20%
1933 16.40% 6.80%
1934 36.10% 3.00%
1935 2.70% 4.80%
1936 1.80% 10.00%
1937 0.00% 4.70%
1938 16.00% 0.20%
1939 2.50% 0.70%
1940 17.70% 25.70%
1941 27.90% 0.70%
1942 0.00% 5.50%
1943 0.80% 6.00%
1944 0.30% 9.90%
1945 0.50% 3.00%
1946 11.00% 2.40%
1947 0.30% 3.30%
1948 0.80% 15.20%
1949 12.60% 20.90%
1950 0.20% 28.20%
1951 0.00% 25.30%
1952 0.80% 5.10%
1953 9.60% 2.30%
1954 12.60% 0.30%
1955 0.00% 19.40%
1956 0.30% 4.80%
1957 6.20% 0.50%
1958 13.30% 13.00%
1959 0.70% 1.30%
1960 0.00% 11.50%
1961 0.20% 7.40%
1962 0.20% 3.70%
1963 2.00% 24.50%
1964 0.00% 14.40%
1965 0.20% 1.90%
1966 0.00% 17.60%
1967 1.70% 7.20%
1968 0.00% 17.90%
1969 0.80% 7.10%
1970 0.30% 3.90%
1971 0.00% 5.10%
1972 0.00% 4.20%
1973 18.20% 5.20%
1974 0.30% 1.60%
1975 0.40% 12.10%
1976 0.00% 42.50%
1977 2.00% 0.70%
1978 1.70% 27.50%
1979 1.00% 30.90%
1980 1.30% 0.70%
1981 29.10% 7.00%
1982 1.00% 2.50%
1983 11.70% 7.30%
1984 1.50% 2.30%
1985 0.70% 17.80%
1986 34.70% 0.00%
1987 24.70% 1.90%
1988 1.10% 10.80%
1989 0.80% 13.30%
1990 22.90% 0.50%
1991 27.40% 0.00%
1992 15.20% 0.20%
1993 0.30% 6.50%
1994 8.90% 0.30%
1995 13.40% 0.00%
1996 10.20% 12.30%
1997 9.80% 1.10%
1998 75.30% 0.00%
1999 29.60% 0.70%
2000 18.60% 0.30%
2001 32.40% 0.00%
2002 17.60% 0.60%
2003 30.00% 0.00%
2004 26.90% 0.00%
2005 34.70% 0.00%
2006 47.70% 0.30%
2007 27.90% 0.00%
2008 1.90% 1.80%
2009 2.90% 0.80%
2010 20.60% 0.80%
2011 16.80% 0.90%
2012 78.30% 0.00%
2013 8.30% 2.30%
2014 26.90% 10.10%

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.