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 0.00% 6.90%
1911 1.70% 3.20%
1912 15.00% 0.00%
1913 1.60% 0.00%
1914 0.00% 11.40%
1915 0.00% 26.10%
1916 0.00% 6.90%
1917 0.00% 16.00%
1918 38.60% 0.00%
1919 0.00% 0.00%
1920 0.00% 18.80%
1921 54.30% 0.00%
1922 49.90% 0.00%
1923 0.00% 3.10%
1924 0.00% 42.70%
1925 0.00% 1.60%
1926 0.00% 86.70%
1927 32.40% 0.00%
1928 0.00% 9.50%
1929 71.60% 0.00%
1930 0.00% 0.00%
1931 0.00% 73.20%
1932 0.00% 20.50%
1933 1.70% 0.00%
1934 0.00% 4.60%
1935 55.40% 0.00%
1936 1.70% 0.00%
1937 0.00% 7.90%
1938 50.00% 0.00%
1939 0.00% 0.00%
1940 0.00% 56.60%
1941 0.00% 30.70%
1942 0.00% 3.40%
1943 0.00% 3.20%
1944 0.00% 0.00%
1945 64.90% 0.00%
1946 46.50% 0.00%
1947 0.00% 23.60%
1948 63.60% 0.00%
1949 0.00% 0.00%
1950 0.00% 8.00%
1951 0.00% 1.70%
1952 0.00% 1.60%
1953 23.50% 0.00%
1954 0.00% 0.00%
1955 47.90% 0.00%
1956 0.00% 1.50%
1957 6.40% 0.00%
1958 0.00% 0.00%
1959 0.00% 0.00%
1960 0.00% 91.60%
1961 0.00% 14.50%
1962 0.00% 0.00%
1963 8.20% 0.00%
1964 0.00% 0.00%
1965 1.60% 0.00%
1966 0.00% 1.60%
1967 3.30% 1.60%
1968 0.00% 8.20%
1969 0.00% 48.40%
1970 0.00% 0.00%
1971 0.00% 100.00%
1972 0.00% 1.50%
1973 4.60% 0.00%
1974 3.10% 0.00%
1975 0.00% 0.00%
1976 0.00% 3.10%
1977 28.30% 0.00%
1978 0.00% 0.00%
1979 0.00% 0.00%
1980 0.00% 4.70%
1981 0.00% 9.70%
1982 0.00% 0.00%
1983 0.00% 39.50%
1984 0.00% 8.00%
1985 4.90% 0.00%
1986 0.00% 10.10%
1987 0.00% 0.00%
1988 0.00% 25.70%
1989 1.70% 0.00%
1990 3.30% 0.00%
1991 95.20% 0.00%
1992 0.00% 22.90%
1993 0.00% 42.60%
1994 5.10% 1.60%
1995 20.00% 1.50%
1996 0.00% 9.70%
1997 11.90% 9.40%
1998 12.50% 0.00%
1999 0.00% 0.00%
2000 4.60% 0.00%
2001 0.00% 0.00%
2002 13.40% 1.50%
2003 55.60% 0.00%
2004 40.80% 0.00%
2005 0.00% 24.40%
2006 3.20% 0.00%
2007 0.00% 1.70%
2008 0.00% 0.00%
2009 3.10% 0.00%
2010 20.20% 0.00%
2011 19.00% 0.00%
2012 100.00% 0.00%
2013 0.00% 27.90%
2014 0.00% 3.10%

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.