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 4.00% 15.30%
1911 0.00% 3.90%
1912 0.00% 54.50%
1913 0.00% 31.50%
1914 0.00% 5.80%
1915 1.80% 6.00%
1916 0.00% 51.50%
1917 13.50% 2.00%
1918 7.60% 0.00%
1919 14.00% 2.00%
1920 3.70% 0.00%
1921 4.00% 7.60%
1922 41.80% 0.00%
1923 3.90% 9.90%
1924 1.80% 3.80%
1925 5.60% 2.00%
1926 34.60% 0.00%
1927 0.00% 2.00%
1928 0.00% 0.00%
1929 0.00% 0.00%
1930 0.00% 0.00%
1931 17.70% 0.00%
1932 0.00% 3.80%
1933 10.00% 2.00%
1934 5.90% 0.00%
1935 2.00% 2.00%
1936 5.90% 0.00%
1937 0.00% 0.00%
1938 7.40% 2.00%
1939 3.70% 0.00%
1940 48.30% 0.00%
1941 2.00% 7.90%
1942 0.00% 0.00%
1943 0.00% 23.00%
1944 0.00% 27.80%
1945 0.00% 0.00%
1946 0.00% 0.00%
1947 2.00% 35.10%
1948 0.00% 17.20%
1949 0.00% 1.80%
1950 0.00% 4.00%
1951 7.60% 8.00%
1952 0.00% 2.00%
1953 0.00% 38.80%
1954 0.00% 82.20%
1955 0.00% 24.70%
1956 0.00% 0.00%
1957 3.90% 18.70%
1958 54.50% 0.00%
1959 0.00% 0.00%
1960 10.00% 0.00%
1961 88.10% 0.00%
1962 0.00% 3.70%
1963 0.00% 42.70%
1964 0.00% 55.00%
1965 0.00% 14.00%
1966 0.00% 9.30%
1967 66.30% 0.00%
1968 2.00% 4.00%
1969 0.00% 0.00%
1970 22.50% 0.00%
1971 0.00% 2.00%
1972 3.80% 0.00%
1973 0.00% 0.00%
1974 2.00% 0.00%
1975 0.00% 24.60%
1976 0.00% 74.60%
1977 3.70% 0.00%
1978 1.80% 2.00%
1979 1.80% 0.00%
1980 0.00% 64.60%
1981 0.00% 1.80%
1982 0.00% 0.00%
1983 0.00% 38.40%
1984 0.00% 0.00%
1985 18.80% 0.00%
1986 4.00% 0.00%
1987 0.00% 0.00%
1988 11.90% 0.00%
1989 0.00% 0.00%
1990 0.00% 2.00%
1991 0.00% 3.80%
1992 32.70% 0.00%
1993 2.00% 84.60%
1994 23.40% 0.00%
1995 2.00% 32.50%
1996 19.40% 0.00%
1997 7.80% 1.80%
1998 22.60% 0.00%
1999 0.00% 7.50%
2000 8.00% 0.00%
2001 0.00% 3.60%
2002 7.90% 0.00%
2003 94.20% 0.00%
2004 28.50% 0.00%
2005 2.00% 0.00%
2006 37.00% 0.00%
2007 37.40% 0.00%
2008 2.00% 2.00%
2009 24.40% 2.00%
2010 0.00% 9.80%
2011 0.00% 7.40%
2012 13.90% 0.00%
2013 47.10% 0.00%
2014 50.00% 0.00%
2015 88.20% 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.