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 16.12%
1911 23.22%
1912 28.58%
1913 26.48%
1914 40.64%
1915 15.96%
1916 18.50%
1917 43.44%
1918 17.84%
1919 2.16%
1920 21.28%
1921 30.68%
1922 10.60%
1923 26.04%
1924 54.18%
1925 9.70%
1926 41.38%
1927 6.48%
1928 10.30%
1929 6.48%
1930 15.98%
1931 33.40%
1932 12.02%
1933 9.18%
1934 20.30%
1935 18.54%
1936 10.72%
1937 15.48%
1938 11.72%
1939 5.64%
1940 41.12%
1941 23.78%
1942 10.78%
1943 15.32%
1944 7.86%
1945 21.06%
1946 17.98%
1947 6.60%
1948 11.36%
1949 34.48%
1950 14.84%
1951 8.22%
1952 15.90%
1953 37.36%
1954 21.72%
1955 12.24%
1956 8.82%
1957 18.94%
1958 30.50%
1959 0.08%
1960 8.02%
1961 1.50%
1962 15.92%
1963 29.72%
1964 18.40%
1965 15.46%
1966 15.08%
1967 5.22%
1968 5.82%
1969 2.64%
1970 3.52%
1971 5.42%
1972 42.84%
1973 31.74%
1974 11.36%
1975 16.00%
1976 25.36%
1977 17.32%
1978 30.72%
1979 19.10%
1980 8.50%
1981 4.70%
1982 4.84%
1983 9.22%
1984 3.22%
1985 12.70%
1986 4.98%
1987 5.08%
1988 7.48%
1989 19.02%
1990 46.16%
1991 39.52%
1992 18.26%
1993 5.70%
1994 9.78%
1995 7.88%
1996 34.60%
1997 10.38%
1998 51.90%
1999 40.46%
2000 13.30%
2001 35.48%
2002 35.42%
2003 33.22%
2004 25.42%
2005 27.20%
2006 66.56%
2007 15.50%
2008 33.58%
2009 19.92%
2010 36.62%
2011 70.30%
2012 49.82%
2013 24.16%
2014 12.86%
2015 21.44%

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.