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 19.14%
1911 14.20%
1912 18.80%
1913 11.76%
1914 23.38%
1915 11.68%
1916 19.22%
1917 9.92%
1918 18.42%
1919 15.20%
1920 19.76%
1921 9.98%
1922 16.14%
1923 12.02%
1924 9.72%
1925 37.66%
1926 16.44%
1927 24.42%
1928 22.54%
1929 23.06%
1930 34.96%
1931 18.26%
1932 15.46%
1933 7.18%
1934 23.12%
1935 2.90%
1936 21.80%
1937 5.76%
1938 7.00%
1939 15.20%
1940 11.24%
1941 13.08%
1942 8.66%
1943 26.12%
1944 6.26%
1945 9.56%
1946 21.74%
1947 15.96%
1948 10.36%
1949 21.62%
1950 15.32%
1951 10.80%
1952 28.42%
1953 10.84%
1954 45.84%
1955 16.24%
1956 9.88%
1957 9.84%
1958 8.72%
1959 14.34%
1960 9.20%
1961 37.62%
1962 11.48%
1963 14.00%
1964 19.82%
1965 23.22%
1966 28.92%
1967 45.22%
1968 9.02%
1969 6.40%
1970 7.94%
1971 10.82%
1972 36.10%
1973 15.06%
1974 31.22%
1975 18.18%
1976 28.16%
1977 11.92%
1978 9.64%
1979 20.60%
1980 30.96%
1981 19.84%
1982 10.06%
1983 21.22%
1984 14.58%
1985 10.46%
1986 29.68%
1987 18.26%
1988 22.06%
1989 31.94%
1990 17.76%
1991 21.52%
1992 19.96%
1993 25.90%
1994 24.42%
1995 19.94%
1996 7.74%
1997 19.54%
1998 31.76%
1999 23.88%
2000 22.70%
2001 7.32%
2002 21.62%
2003 40.56%
2004 18.06%
2005 36.66%
2006 25.28%
2007 29.30%
2008 19.78%
2009 7.42%
2010 40.48%
2011 54.46%
2012 10.22%
2013 48.66%
2014 12.72%
2015 19.56%

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.