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 Warm Cold
1911 6.60% 0.00%
1912 0.00% 23.90%
1913 22.00% 0.00%
1914 0.00% 0.00%
1915 0.00% 16.40%
1916 4.80% 0.00%
1917 0.00% 0.00%
1918 0.00% 58.80%
1919 4.60% 0.00%
1920 0.00% 7.80%
1921 1.50% 0.00%
1922 8.10% 0.00%
1923 24.50% 0.00%
1924 1.50% 0.00%
1925 3.20% 0.00%
1926 0.00% 1.70%
1927 60.60% 0.00%
1928 0.00% 0.00%
1929 1.70% 0.00%
1930 17.10% 0.00%
1931 0.00% 13.60%
1932 100.00% 0.00%
1933 29.20% 0.00%
1934 8.10% 0.00%
1935 0.00% 0.00%
1936 0.00% 90.00%
1937 18.20% 0.00%
1938 0.00% 0.00%
1939 19.20% 0.00%
1940 0.00% 79.50%
1941 0.00% 0.00%
1942 0.00% 0.00%
1943 3.20% 0.00%
1944 1.60% 0.00%
1945 0.00% 0.00%
1946 0.00% 0.00%
1947 0.00% 0.00%
1948 0.00% 1.60%
1949 98.40% 0.00%
1950 98.50% 0.00%
1951 0.00% 0.00%
1952 59.70% 0.00%
1953 6.30% 0.00%
1954 6.20% 0.00%
1955 0.00% 0.00%
1956 0.00% 0.00%
1957 89.00% 0.00%
1958 0.00% 67.00%
1959 0.00% 0.00%
1960 0.00% 0.00%
1961 0.00% 0.00%
1962 1.70% 0.00%
1963 0.00% 73.90%
1964 0.00% 84.40%
1965 0.00% 0.00%
1966 0.00% 1.70%
1967 0.00% 0.00%
1968 0.00% 1.60%
1969 0.00% 25.40%
1970 0.00% 58.10%
1971 0.00% 0.00%
1972 19.70% 0.00%
1973 0.00% 0.00%
1974 48.90% 0.00%
1975 5.20% 0.00%
1976 0.00% 0.00%
1977 0.00% 98.50%
1978 0.00% 100.00%
1979 0.00% 33.80%
1980 0.00% 0.00%
1981 0.00% 5.10%
1982 0.00% 14.10%
1983 0.00% 0.00%
1984 0.00% 4.80%
1985 0.00% 1.70%
1986 0.00% 0.00%
1987 0.00% 5.00%
1988 0.00% 0.00%
1989 8.30% 0.00%
1990 0.00% 0.00%
1991 15.50% 0.00%
1992 15.80% 0.00%
1993 0.00% 0.00%
1994 0.00% 0.00%
1995 0.00% 0.00%
1996 0.00% 0.00%
1997 3.30% 0.00%
1998 1.50% 0.00%
1999 90.50% 0.00%
2000 17.60% 0.00%
2001 0.00% 4.90%
2002 52.10% 0.00%
2003 0.00% 12.40%
2004 0.00% 0.00%
2005 1.60% 0.00%
2006 0.00% 0.00%
2007 6.50% 0.00%
2008 16.40% 0.00%
2009 0.00% 0.00%
2010 0.00% 92.00%
2011 0.00% 17.70%
2012 73.90% 0.00%
2013 26.30% 0.00%
2014 0.00% 0.00%
2015 0.00% 3.10%

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.