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 24.40%
1911 24.78%
1912 11.44%
1913 20.06%
1914 13.36%
1915 17.80%
1916 34.04%
1917 29.58%
1918 17.26%
1919 3.84%
1920 13.26%
1921 42.94%
1922 13.34%
1923 39.64%
1924 30.12%
1925 15.60%
1926 45.50%
1927 5.18%
1928 24.00%
1929 10.26%
1930 9.28%
1931 17.20%
1932 24.30%
1933 9.64%
1934 12.90%
1935 6.18%
1936 20.90%
1937 9.12%
1938 3.46%
1939 11.70%
1940 35.24%
1941 24.36%
1942 35.80%
1943 26.56%
1944 3.68%
1945 45.06%
1946 21.26%
1947 20.78%
1948 13.24%
1949 3.68%
1950 36.76%
1951 11.12%
1952 16.04%
1953 27.28%
1954 16.52%
1955 15.24%
1956 43.18%
1957 11.90%
1958 11.02%
1959 3.28%
1960 8.76%
1961 11.74%
1962 13.70%
1963 6.40%
1964 11.04%
1965 16.12%
1966 10.12%
1967 30.50%
1968 8.74%
1969 7.86%
1970 4.76%
1971 22.94%
1972 8.94%
1973 50.74%
1974 18.06%
1975 7.96%
1976 13.18%
1977 49.60%
1978 5.22%
1979 14.12%
1980 8.30%
1981 7.48%
1982 5.30%
1983 26.96%
1984 44.36%
1985 28.10%
1986 25.18%
1987 23.78%
1988 3.70%
1989 11.62%
1990 14.76%
1991 48.54%
1992 10.10%
1993 14.76%
1994 4.28%
1995 3.58%
1996 13.86%
1997 21.92%
1998 42.12%
1999 15.68%
2000 45.56%
2001 12.32%
2002 18.70%
2003 10.22%
2004 28.14%
2005 16.68%
2006 26.06%
2007 23.46%
2008 19.86%
2009 13.54%
2010 60.20%
2011 51.96%
2012 50.52%
2013 8.18%
2014 27.18%
2015 5.98%

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.