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 37.34%
1911 22.64%
1912 28.16%
1913 16.24%
1914 12.82%
1915 48.68%
1916 9.10%
1917 29.94%
1918 17.80%
1919 12.18%
1920 7.96%
1921 36.56%
1922 8.36%
1923 11.68%
1924 40.16%
1925 9.66%
1926 16.94%
1927 32.64%
1928 16.04%
1929 10.82%
1930 21.30%
1931 36.94%
1932 9.96%
1933 41.44%
1934 37.74%
1935 11.06%
1936 41.54%
1937 27.38%
1938 9.24%
1939 7.64%
1940 14.12%
1941 7.72%
1942 9.58%
1943 13.80%
1944 13.00%
1945 26.36%
1946 9.60%
1947 9.50%
1948 6.30%
1949 24.16%
1950 32.48%
1951 35.70%
1952 17.10%
1953 18.16%
1954 9.84%
1955 28.94%
1956 12.52%
1957 9.18%
1958 23.56%
1959 14.64%
1960 8.58%
1961 15.34%
1962 8.56%
1963 13.44%
1964 10.22%
1965 6.14%
1966 9.10%
1967 14.90%
1968 16.32%
1969 8.62%
1970 11.46%
1971 8.82%
1972 12.14%
1973 14.00%
1974 7.02%
1975 8.66%
1976 28.70%
1977 12.34%
1978 10.98%
1979 13.48%
1980 13.40%
1981 10.94%
1982 16.86%
1983 44.52%
1984 9.24%
1985 26.78%
1986 10.10%
1987 21.72%
1988 56.10%
1989 12.60%
1990 10.86%
1991 21.52%
1992 42.78%
1993 44.26%
1994 17.02%
1995 26.16%
1996 14.04%
1997 5.72%
1998 13.28%
1999 17.96%
2000 15.82%
2001 5.14%
2002 26.58%
2003 2.84%
2004 38.36%
2005 26.38%
2006 18.78%
2007 22.20%
2008 15.06%
2009 38.42%
2010 48.42%
2011 25.16%
2012 38.78%
2013 16.32%
2014 22.32%
2015 10.88%

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.