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 Wet Dry
1910 0.00% 3.40%
1911 0.00% 11.10%
1912 13.70% 0.00%
1913 0.00% 1.30%
1914 0.00% 68.50%
1915 8.90% 0.00%
1916 5.60% 0.00%
1917 7.60% 0.00%
1918 0.90% 12.60%
1919 0.90% 0.00%
1920 20.70% 0.00%
1921 0.00% 2.10%
1922 0.00% 0.00%
1923 0.00% 5.40%
1924 5.60% 0.00%
1925 0.00% 31.10%
1926 1.50% 0.00%
1927 64.10% 0.00%
1928 43.50% 0.00%
1929 30.10% 0.00%
1930 0.00% 58.90%
1931 0.00% 63.60%
1932 0.00% 11.70%
1933 0.00% 1.20%
1934 0.00% 61.20%
1935 20.50% 7.70%
1936 0.00% 82.40%
1937 6.40% 0.00%
1938 2.60% 0.00%
1939 0.00% 0.00%
1940 0.00% 13.20%
1941 0.00% 64.20%
1942 2.40% 7.80%
1943 4.40% 3.10%
1944 0.00% 19.50%
1945 19.90% 0.00%
1946 0.00% 0.00%
1947 4.80% 3.80%
1948 0.00% 0.00%
1949 1.00% 0.00%
1950 52.00% 0.00%
1951 29.90% 0.00%
1952 0.00% 0.00%
1953 0.00% 34.00%
1954 0.00% 72.30%
1955 0.00% 5.70%
1956 9.10% 14.10%
1957 15.80% 4.70%
1958 29.70% 0.00%
1959 0.00% 0.90%
1960 2.30% 0.00%
1961 8.80% 0.00%
1962 0.00% 3.20%
1963 0.00% 11.90%
1964 0.00% 40.10%
1965 0.00% 14.70%
1966 0.00% 9.70%
1967 0.00% 0.00%
1968 0.00% 0.00%
1969 4.50% 2.40%
1970 0.00% 0.90%
1971 0.00% 0.00%
1972 8.60% 0.00%
1973 75.00% 0.00%
1974 31.60% 0.00%
1975 20.80% 0.00%
1976 0.00% 0.90%
1977 0.00% 1.00%
1978 0.00% 0.00%
1979 33.20% 0.00%
1980 13.00% 16.40%
1981 15.90% 0.00%
1982 17.20% 0.00%
1983 3.60% 0.00%
1984 0.00% 0.00%
1985 16.50% 0.00%
1986 0.00% 10.60%
1987 0.00% 6.70%
1988 0.00% 62.70%
1989 39.70% 3.80%
1990 31.70% 0.00%
1991 0.00% 15.50%
1992 0.00% 0.00%
1993 36.70% 0.00%
1994 19.30% 0.00%
1995 8.00% 0.00%
1996 17.30% 0.00%
1997 30.30% 0.00%
1998 10.40% 0.00%
1999 0.00% 22.00%
2000 0.00% 0.00%
2001 0.00% 0.00%
2002 0.90% 0.00%
2003 33.50% 4.70%
2004 37.00% 0.00%
2005 0.00% 5.80%
2006 0.00% 12.60%
2007 0.00% 23.80%
2008 36.70% 5.80%
2009 33.40% 0.00%
2010 25.60% 0.00%
2011 27.50% 0.00%
2012 0.00% 62.80%
2013 10.50% 0.00%
2014 8.70% 0.00%
2015 42.80% 0.00%

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.