U.S. Climate Extremes Index (CEI): Graph

NCEI added Alaska climate divisions to its nClimDiv dataset on Friday, March 6, 2015, coincident with the release of the February 2015 monthly monitoring report. For more information on this data, please visit the Alaska Climate Divisions FAQ.

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 48.50% 0.00%
1911 0.00% 70.80%
1912 0.00% 7.90%
1913 0.00% 4.00%
1914 13.40% 0.00%
1915 41.70% 0.00%
1916 0.00% 4.00%
1917 0.00% 60.00%
1918 0.00% 31.30%
1919 0.00% 7.60%
1920 0.00% 59.70%
1921 4.00% 1.80%
1922 0.00% 78.50%
1923 2.00% 2.00%
1924 0.00% 9.80%
1925 19.40% 0.00%
1926 25.20% 0.00%
1927 0.00% 19.00%
1928 2.00% 0.00%
1929 2.00% 5.90%
1930 7.90% 0.00%
1931 3.90% 0.00%
1932 12.00% 0.00%
1933 0.00% 19.60%
1934 96.10% 0.00%
1935 0.00% 53.30%
1936 15.40% 0.00%
1937 2.00% 0.00%
1938 0.00% 0.00%
1939 2.00% 0.00%
1940 65.10% 0.00%
1941 22.50% 0.00%
1942 0.00% 2.00%
1943 0.00% 7.30%
1944 0.00% 6.00%
1945 0.00% 2.00%
1946 0.00% 0.00%
1947 36.90% 0.00%
1948 0.00% 5.80%
1949 7.90% 0.00%
1950 0.00% 23.00%
1951 0.00% 44.90%
1952 0.00% 0.00%
1953 0.00% 6.00%
1954 0.00% 39.40%
1955 0.00% 96.10%
1956 0.00% 0.00%
1957 46.30% 0.00%
1958 0.00% 0.00%
1959 0.00% 7.90%
1960 0.00% 0.00%
1961 1.90% 0.00%
1962 0.00% 0.00%
1963 3.80% 0.00%
1964 0.00% 64.10%
1965 0.00% 18.80%
1966 0.00% 2.00%
1967 0.00% 19.50%
1968 0.00% 8.00%
1969 0.00% 0.00%
1970 0.00% 21.50%
1971 0.00% 9.50%
1972 0.00% 0.00%
1973 1.90% 0.00%
1974 1.90% 0.00%
1975 0.00% 47.90%
1976 0.00% 27.40%
1977 0.00% 6.00%
1978 2.00% 0.00%
1979 2.00% 0.00%
1980 9.50% 0.00%
1981 3.90% 0.00%
1982 0.00% 26.30%
1983 9.50% 0.00%
1984 1.90% 0.00%
1985 0.00% 0.00%
1986 19.40% 0.00%
1987 68.90% 0.00%
1988 0.00% 0.00%
1989 9.80% 0.00%
1990 11.30% 0.00%
1991 0.00% 0.00%
1992 86.40% 0.00%
1993 69.10% 0.00%
1994 59.30% 0.00%
1995 4.00% 0.00%
1996 2.00% 0.00%
1997 25.70% 0.00%
1998 24.10% 0.00%
1999 2.00% 19.20%
2000 9.90% 0.00%
2001 4.00% 0.00%
2002 0.00% 1.90%
2003 25.00% 0.00%
2004 38.20% 0.00%
2005 55.40% 0.00%
2006 3.90% 0.00%
2007 7.90% 0.00%
2008 0.00% 17.80%
2009 0.00% 7.40%
2010 0.00% 4.00%
2011 0.00% 3.90%
2012 3.90% 0.00%
2013 2.00% 0.00%
2014 28.90% 0.00%
2015 17.30% 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.