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 Percent
1910 17.42%
1911 40.66%
1912 19.24%
1913 12.86%
1914 14.30%
1915 10.42%
1916 35.14%
1917 21.56%
1918 6.72%
1919 19.56%
1920 15.94%
1921 4.46%
1922 36.30%
1923 20.22%
1924 33.92%
1925 4.06%
1926 34.98%
1927 11.90%
1928 8.80%
1929 24.24%
1930 13.08%
1931 10.50%
1932 12.16%
1933 17.26%
1934 30.86%
1935 3.30%
1936 18.92%
1937 8.22%
1938 23.88%
1939 26.18%
1940 22.28%
1941 46.04%
1942 9.22%
1943 6.50%
1944 15.08%
1945 8.24%
1946 14.42%
1947 9.90%
1948 28.76%
1949 14.90%
1950 15.86%
1951 11.08%
1952 21.90%
1953 11.68%
1954 22.98%
1955 27.16%
1956 11.98%
1957 17.70%
1958 23.40%
1959 57.44%
1960 10.98%
1961 8.88%
1962 23.40%
1963 8.44%
1964 4.06%
1965 15.04%
1966 16.16%
1967 1.08%
1968 0.00%
1969 19.78%
1970 11.94%
1971 16.52%
1972 3.74%
1973 12.76%
1974 14.42%
1975 14.90%
1976 18.98%
1977 13.40%
1978 16.44%
1979 7.20%
1980 13.74%
1981 22.58%
1982 44.66%
1983 65.36%
1984 14.78%
1985 4.92%
1986 23.20%
1987 6.92%
1988 8.04%
1989 7.56%
1990 19.36%
1991 7.30%
1992 24.48%
1993 6.72%
1994 0.00%
1995 38.92%
1996 61.10%
1997 35.02%
1998 51.56%
1999 2.22%
2000 6.70%
2001 18.64%
2002 22.42%
2003 27.36%
2004 25.44%
2005 39.80%
2006 18.00%
2007 33.42%
2008 21.16%
2009 3.96%
2010 19.96%
2011 6.94%
2012 41.36%
2013 41.08%
2014 61.32%
2015 65.22%

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.