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

NCDC 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 75.40% 0.00%
1911 0.00% 2.00%
1912 0.00% 25.70%
1913 0.00% 20.90%
1914 26.70% 0.00%
1915 15.00% 0.00%
1916 0.00% 7.40%
1917 0.00% 100.00%
1918 0.00% 0.00%
1919 0.00% 1.90%
1920 0.00% 63.60%
1921 0.00% 4.00%
1922 0.00% 77.10%
1923 0.00% 7.80%
1924 22.60% 0.00%
1925 18.80% 0.00%
1926 90.10% 0.00%
1927 0.00% 29.00%
1928 0.00% 0.00%
1929 0.00% 5.80%
1930 3.80% 0.00%
1931 27.30% 0.00%
1932 0.00% 0.00%
1933 0.00% 34.90%
1934 98.00% 0.00%
1935 0.00% 4.00%
1936 3.80% 0.00%
1937 0.00% 0.00%
1938 0.00% 2.00%
1939 50.60% 0.00%
1940 53.30% 0.00%
1941 45.10% 0.00%
1942 0.00% 2.00%
1943 0.00% 0.00%
1944 0.00% 0.00%
1945 0.00% 7.80%
1946 0.00% 2.00%
1947 72.60% 0.00%
1948 0.00% 71.10%
1949 15.40% 0.00%
1950 0.00% 35.50%
1951 0.00% 0.00%
1952 0.00% 2.00%
1953 0.00% 8.00%
1954 0.00% 1.80%
1955 0.00% 100.00%
1956 0.00% 0.00%
1957 0.00% 0.00%
1958 5.50% 0.00%
1959 0.00% 0.00%
1960 0.00% 1.80%
1961 0.00% 2.00%
1962 0.00% 13.20%
1963 0.00% 0.00%
1964 0.00% 42.40%
1965 0.00% 0.00%
1966 11.90% 0.00%
1967 0.00% 40.10%
1968 0.00% 0.00%
1969 0.00% 0.00%
1970 0.00% 11.50%
1971 0.00% 13.80%
1972 0.00% 0.00%
1973 1.80% 0.00%
1974 0.00% 20.70%
1975 0.00% 81.10%
1976 0.00% 1.80%
1977 0.00% 0.00%
1978 0.00% 2.00%
1979 0.00% 0.00%
1980 0.00% 0.00%
1981 0.00% 0.00%
1982 0.00% 4.00%
1983 11.10% 0.00%
1984 0.00% 5.80%
1985 0.00% 0.00%
1986 2.00% 0.00%
1987 68.00% 0.00%
1988 2.00% 0.00%
1989 0.00% 0.00%
1990 2.00% 0.00%
1991 0.00% 17.70%
1992 100.00% 0.00%
1993 0.00% 0.00%
1994 52.20% 0.00%
1995 1.80% 0.00%
1996 0.00% 3.70%
1997 4.00% 1.80%
1998 0.00% 6.00%
1999 0.00% 5.70%
2000 4.00% 0.00%
2001 5.90% 0.00%
2002 0.00% 9.20%
2003 0.00% 0.00%
2004 67.30% 0.00%
2005 9.60% 0.00%
2006 0.00% 0.00%
2007 37.70% 0.00%
2008 0.00% 13.20%
2009 0.00% 0.00%
2010 0.00% 6.00%
2011 0.00% 78.40%
2012 4.00% 0.00%
2013 0.00% 0.00%
2014 15.70% 0.00%
2015 66.50% 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.