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 0.00% 80.50%
1911 0.00% 28.70%
1912 0.00% 13.70%
1913 0.00% 2.00%
1914 0.00% 15.20%
1915 5.70% 15.80%
1916 0.00% 60.00%
1917 0.00% 40.00%
1918 7.60% 0.00%
1919 4.00% 58.90%
1920 0.00% 3.70%
1921 6.00% 9.60%
1922 13.50% 2.00%
1923 5.90% 0.00%
1924 0.00% 28.90%
1925 2.00% 1.90%
1926 12.00% 3.80%
1927 0.00% 3.90%
1928 0.00% 6.00%
1929 0.00% 15.40%
1930 0.00% 13.40%
1931 6.00% 0.00%
1932 0.00% 5.90%
1933 2.00% 16.90%
1934 0.00% 1.90%
1935 0.00% 15.30%
1936 23.60% 0.00%
1937 2.00% 0.00%
1938 0.00% 7.70%
1939 0.00% 3.70%
1940 6.00% 0.00%
1941 34.60% 0.00%
1942 9.50% 4.00%
1943 0.00% 40.70%
1944 0.00% 27.50%
1945 0.00% 22.90%
1946 0.00% 3.70%
1947 0.00% 11.80%
1948 0.00% 0.00%
1949 0.00% 28.30%
1950 0.00% 0.00%
1951 0.00% 21.00%
1952 0.00% 5.60%
1953 0.00% 26.80%
1954 0.00% 55.20%
1955 0.00% 26.70%
1956 0.00% 4.00%
1957 0.00% 25.00%
1958 72.40% 0.00%
1959 0.00% 11.30%
1960 0.00% 1.90%
1961 48.40% 0.00%
1962 0.00% 44.10%
1963 0.00% 8.00%
1964 0.00% 17.10%
1965 0.00% 0.00%
1966 0.00% 13.50%
1967 13.70% 0.00%
1968 2.00% 0.00%
1969 0.00% 2.00%
1970 15.50% 2.00%
1971 6.00% 0.00%
1972 3.90% 0.00%
1973 0.00% 1.90%
1974 0.00% 0.00%
1975 0.00% 0.00%
1976 0.00% 19.10%
1977 27.20% 0.00%
1978 9.80% 2.00%
1979 0.00% 0.00%
1980 0.00% 24.90%
1981 0.00% 0.00%
1982 3.80% 0.00%
1983 5.90% 0.00%
1984 7.90% 5.80%
1985 6.00% 0.00%
1986 8.00% 0.00%
1987 0.00% 1.90%
1988 7.90% 1.90%
1989 2.00% 0.00%
1990 57.10% 0.00%
1991 0.00% 2.00%
1992 43.70% 2.00%
1993 5.70% 27.80%
1994 3.80% 2.00%
1995 0.00% 12.00%
1996 2.00% 0.00%
1997 17.10% 0.00%
1998 68.20% 0.00%
1999 0.00% 2.00%
2000 0.00% 5.80%
2001 2.00% 0.00%
2002 9.70% 0.00%
2003 52.40% 0.00%
2004 72.50% 0.00%
2005 5.90% 2.00%
2006 34.80% 0.00%
2007 30.80% 0.00%
2008 0.00% 7.60%
2009 55.00% 0.00%
2010 0.00% 6.00%
2011 0.00% 0.00%
2012 3.90% 0.00%
2013 75.00% 0.00%
2014 72.70% 0.00%
2015 96.00% 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.