U.S. Climate Extremes Index (CEI): Graph

NCDC 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 19.86%
1911 11.50%
1912 23.94%
1913 11.50%
1914 16.06%
1915 23.26%
1916 12.04%
1917 12.80%
1918 21.84%
1919 9.50%
1920 23.28%
1921 27.92%
1922 19.78%
1923 13.48%
1924 26.26%
1925 20.68%
1926 41.16%
1927 22.08%
1928 16.78%
1929 39.88%
1930 7.50%
1931 44.82%
1932 14.26%
1933 5.70%
1934 12.02%
1935 23.82%
1936 15.62%
1937 7.56%
1938 26.08%
1939 3.10%
1940 20.60%
1941 27.24%
1942 21.46%
1943 5.98%
1944 13.52%
1945 40.18%
1946 18.32%
1947 17.00%
1948 32.04%
1949 8.70%
1950 7.10%
1951 7.50%
1952 6.06%
1953 10.88%
1954 4.16%
1955 38.94%
1956 9.18%
1957 10.18%
1958 33.20%
1959 10.98%
1960 53.44%
1961 17.88%
1962 5.80%
1963 13.30%
1964 21.28%
1965 10.42%
1966 12.40%
1967 19.70%
1968 2.04%
1969 26.30%
1970 4.80%
1971 36.94%
1972 8.16%
1973 32.24%
1974 8.02%
1975 22.46%
1976 16.02%
1977 25.88%
1978 11.66%
1979 15.04%
1980 26.22%
1981 14.28%
1982 5.04%
1983 41.78%
1984 30.26%
1985 20.88%
1986 27.20%
1987 9.06%
1988 14.22%
1989 10.58%
1990 14.70%
1991 39.02%
1992 11.86%
1993 26.76%
1994 13.60%
1995 15.66%
1996 10.42%
1997 8.20%
1998 26.02%
1999 9.22%
2000 25.60%
2001 13.50%
2002 23.16%
2003 35.68%
2004 29.02%
2005 13.30%
2006 15.44%
2007 42.42%
2008 13.70%
2009 12.16%
2010 14.58%
2011 22.76%
2012 56.94%
2013 27.94%
2014 19.08%
2015 21.98%

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.