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 27.20% 0.00%
1911 0.00% 0.00%
1912 0.00% 0.00%
1913 0.00% 0.00%
1914 0.00% 0.00%
1915 0.00% 2.50%
1916 0.00% 59.00%
1917 0.00% 97.50%
1918 29.80% 0.00%
1919 0.00% 0.00%
1920 0.00% 0.00%
1921 100.00% 0.00%
1922 0.00% 0.00%
1923 0.00% 18.80%
1924 0.00% 92.90%
1925 0.00% 0.00%
1926 0.00% 80.00%
1927 0.00% 0.00%
1928 0.00% 21.90%
1929 0.00% 0.00%
1930 0.00% 0.00%
1931 4.60% 5.10%
1932 0.00% 29.30%
1933 0.00% 0.00%
1934 0.00% 0.00%
1935 0.00% 2.30%
1936 0.00% 0.00%
1937 0.00% 14.80%
1938 0.00% 2.30%
1939 0.00% 19.00%
1940 0.00% 90.70%
1941 2.40% 0.00%
1942 43.60% 0.00%
1943 0.00% 45.60%
1944 0.00% 0.00%
1945 95.10% 0.00%
1946 63.40% 0.00%
1947 0.00% 14.80%
1948 0.00% 0.00%
1949 4.90% 0.00%
1950 0.00% 42.30%
1951 0.00% 0.00%
1952 0.00% 0.00%
1953 0.00% 0.00%
1954 0.00% 0.00%
1955 24.70% 0.00%
1956 0.00% 67.50%
1957 0.00% 0.00%
1958 0.00% 2.60%
1959 0.00% 0.00%
1960 0.00% 15.10%
1961 0.00% 37.20%
1962 0.00% 0.00%
1963 0.00% 0.00%
1964 0.00% 0.00%
1965 0.00% 0.00%
1966 0.00% 0.00%
1967 0.00% 62.90%
1968 2.40% 0.00%
1969 0.00% 0.00%
1970 0.00% 0.00%
1971 0.00% 27.00%
1972 0.00% 7.30%
1973 0.00% 0.00%
1974 0.00% 9.30%
1975 0.00% 2.50%
1976 2.40% 0.00%
1977 100.00% 0.00%
1978 0.00% 7.50%
1979 0.00% 2.50%
1980 0.00% 2.50%
1981 2.40% 0.00%
1982 0.00% 0.00%
1983 0.00% 5.00%
1984 0.00% 73.90%
1985 47.00% 0.00%
1986 55.30% 0.00%
1987 62.70% 0.00%
1988 0.00% 0.00%
1989 0.00% 0.00%
1990 0.00% 0.00%
1991 95.40% 0.00%
1992 0.00% 2.50%
1993 0.00% 0.00%
1994 0.00% 0.00%
1995 0.00% 0.00%
1996 0.00% 2.50%
1997 0.00% 26.00%
1998 72.50% 0.00%
1999 6.90% 0.00%
2000 17.60% 0.00%
2001 0.00% 0.00%
2002 0.00% 0.00%
2003 0.00% 0.00%
2004 17.40% 0.00%
2005 0.00% 0.00%
2006 9.70% 0.00%
2007 0.00% 0.00%
2008 0.00% 0.00%
2009 0.00% 0.00%
2010 100.00% 0.00%
2011 5.00% 0.00%
2012 100.00% 0.00%
2013 2.30% 0.00%
2014 0.00% 2.40%

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.