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 16.30%
1911 16.74%
1912 23.34%
1913 12.76%
1914 11.02%
1915 55.46%
1916 27.32%
1917 22.04%
1918 9.90%
1919 38.08%
1920 12.38%
1921 15.28%
1922 11.52%
1923 16.62%
1924 29.32%
1925 9.56%
1926 11.60%
1927 30.38%
1928 37.86%
1929 13.68%
1930 14.80%
1931 33.76%
1932 10.56%
1933 31.22%
1934 33.10%
1935 10.30%
1936 57.74%
1937 27.18%
1938 11.12%
1939 11.96%
1940 25.22%
1941 15.22%
1942 15.08%
1943 11.50%
1944 28.82%
1945 23.18%
1946 6.14%
1947 14.36%
1948 11.32%
1949 6.84%
1950 30.78%
1951 39.12%
1952 10.20%
1953 13.12%
1954 9.52%
1955 7.84%
1956 12.96%
1957 7.54%
1958 17.16%
1959 12.56%
1960 7.16%
1961 35.56%
1962 15.94%
1963 10.28%
1964 10.04%
1965 16.26%
1966 5.26%
1967 20.64%
1968 13.68%
1969 10.90%
1970 23.62%
1971 5.24%
1972 7.36%
1973 11.78%
1974 7.26%
1975 14.80%
1976 17.82%
1977 8.70%
1978 13.22%
1979 7.76%
1980 15.12%
1981 12.92%
1982 11.28%
1983 22.96%
1984 14.82%
1985 11.92%
1986 7.32%
1987 6.52%
1988 55.16%
1989 17.58%
1990 5.52%
1991 14.24%
1992 35.60%
1993 57.88%
1994 13.24%
1995 20.26%
1996 12.18%
1997 13.82%
1998 14.42%
1999 15.26%
2000 14.76%
2001 27.38%
2002 25.78%
2003 22.70%
2004 28.10%
2005 13.40%
2006 33.28%
2007 43.12%
2008 13.16%
2009 26.84%
2010 27.10%
2011 29.34%
2012 40.12%
2013 24.34%
2014 24.80%
2015 20.04%

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.