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 Warm Cold
1910 0.00% 8.20%
1911 0.00% 1.60%
1912 0.00% 89.30%
1913 1.60% 0.00%
1914 0.00% 1.60%
1915 0.00% 0.00%
1916 0.00% 63.10%
1917 0.00% 98.50%
1918 0.00% 6.30%
1919 0.00% 0.00%
1920 0.00% 4.80%
1921 61.20% 0.00%
1922 0.00% 0.00%
1923 0.00% 6.30%
1924 0.00% 86.10%
1925 0.00% 0.00%
1926 0.00% 42.70%
1927 0.00% 4.70%
1928 0.00% 1.50%
1929 0.00% 92.00%
1930 0.00% 0.00%
1931 98.40% 0.00%
1932 0.00% 0.00%
1933 1.60% 1.50%
1934 1.60% 3.10%
1935 0.00% 1.50%
1936 0.00% 59.30%
1937 0.00% 18.90%
1938 11.50% 0.00%
1939 0.00% 0.00%
1940 0.00% 0.00%
1941 43.30% 0.00%
1942 0.00% 0.00%
1943 0.00% 9.40%
1944 1.70% 0.00%
1945 0.00% 1.60%
1946 0.00% 0.00%
1947 0.00% 0.00%
1948 0.00% 0.00%
1949 1.70% 0.00%
1950 0.00% 88.60%
1951 0.00% 49.90%
1952 0.00% 0.00%
1953 6.20% 0.00%
1954 3.30% 0.00%
1955 0.00% 0.00%
1956 0.00% 0.00%
1957 0.00% 0.00%
1958 0.00% 1.60%
1959 0.00% 0.00%
1960 0.00% 0.00%
1961 0.00% 0.00%
1962 0.00% 0.00%
1963 0.00% 9.70%
1964 0.00% 0.00%
1965 0.00% 0.00%
1966 0.00% 7.90%
1967 0.00% 9.40%
1968 0.00% 0.00%
1969 0.00% 0.00%
1970 0.00% 0.00%
1971 0.00% 0.00%
1972 0.00% 34.40%
1973 59.40% 0.00%
1974 0.00% 0.00%
1975 0.00% 1.50%
1976 0.00% 33.80%
1977 0.00% 0.00%
1978 0.00% 26.10%
1979 0.00% 38.60%
1980 0.00% 0.00%
1981 9.20% 0.00%
1982 0.00% 0.00%
1983 4.50% 0.00%
1984 0.00% 0.00%
1985 0.00% 5.00%
1986 5.00% 0.00%
1987 98.40% 0.00%
1988 0.00% 0.00%
1989 0.00% 21.80%
1990 8.30% 0.00%
1991 4.80% 0.00%
1992 0.00% 0.00%
1993 0.00% 1.60%
1994 0.00% 0.00%
1995 0.00% 0.00%
1996 0.00% 39.10%
1997 0.00% 0.00%
1998 100.00% 0.00%
1999 73.80% 0.00%
2000 0.00% 0.00%
2001 64.60% 0.00%
2002 27.20% 0.00%
2003 0.00% 0.00%
2004 0.00% 0.00%
2005 58.40% 0.00%
2006 98.30% 0.00%
2007 24.00% 0.00%
2008 0.00% 4.90%
2009 0.00% 0.00%
2010 59.50% 0.00%
2011 10.90% 0.00%
2012 100.00% 0.00%
2013 0.00% 0.00%
2014 0.00% 19.20%
2015 58.30% 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.