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
1910 0.00% 2.30%
1911 0.00% 0.00%
1912 0.00% 65.70%
1913 34.30% 0.00%
1914 0.00% 45.80%
1915 0.00% 2.50%
1916 0.00% 17.30%
1917 0.00% 100.00%
1918 0.00% 7.00%
1919 0.00% 0.00%
1920 0.00% 34.60%
1921 65.90% 0.00%
1922 0.00% 0.00%
1923 0.00% 14.10%
1924 0.00% 83.10%
1925 0.00% 9.40%
1926 0.00% 100.00%
1927 0.00% 0.00%
1928 0.00% 7.10%
1929 0.00% 2.50%
1930 4.90% 0.00%
1931 51.10% 0.00%
1932 2.50% 0.00%
1933 0.00% 2.50%
1934 0.00% 6.90%
1935 0.00% 17.10%
1936 0.00% 2.30%
1937 6.90% 0.00%
1938 29.40% 2.30%
1939 0.00% 0.00%
1940 0.00% 90.70%
1941 0.00% 0.00%
1942 2.30% 0.00%
1943 0.00% 38.30%
1944 0.00% 0.00%
1945 0.00% 0.00%
1946 44.10% 0.00%
1947 0.00% 0.00%
1948 0.00% 0.00%
1949 90.00% 0.00%
1950 0.00% 2.60%
1951 0.00% 0.00%
1952 7.10% 0.00%
1953 87.60% 0.00%
1954 0.00% 0.00%
1955 2.50% 0.00%
1956 0.00% 0.00%
1957 4.90% 0.00%
1958 0.00% 83.50%
1959 0.00% 0.00%
1960 0.00% 2.50%
1961 0.00% 2.50%
1962 0.00% 7.10%
1963 0.00% 0.00%
1964 0.00% 0.00%
1965 0.00% 2.40%
1966 0.00% 0.00%
1967 0.00% 9.90%
1968 0.00% 2.40%
1969 0.00% 0.00%
1970 0.00% 0.00%
1971 0.00% 0.00%
1972 0.00% 82.60%
1973 0.00% 0.00%
1974 0.00% 0.00%
1975 0.00% 0.00%
1976 0.00% 12.30%
1977 0.00% 2.50%
1978 0.00% 56.50%
1979 0.00% 5.00%
1980 0.00% 14.70%
1981 0.00% 0.00%
1982 0.00% 0.00%
1983 0.00% 0.00%
1984 0.00% 0.00%
1985 0.00% 0.00%
1986 0.00% 0.00%
1987 2.40% 0.00%
1988 0.00% 0.00%
1989 0.00% 4.90%
1990 75.90% 0.00%
1991 85.90% 0.00%
1992 0.00% 36.80%
1993 0.00% 0.00%
1994 0.00% 0.00%
1995 0.00% 0.00%
1996 0.00% 12.50%
1997 0.00% 0.00%
1998 100.00% 0.00%
1999 77.80% 0.00%
2000 0.00% 0.00%
2001 67.90% 0.00%
2002 22.50% 0.00%
2003 0.00% 2.50%
2004 0.00% 0.00%
2005 2.40% 0.00%
2006 53.60% 0.00%
2007 5.10% 0.00%
2008 0.00% 0.00%
2009 0.00% 0.00%
2010 29.10% 0.00%
2011 43.80% 0.00%
2012 100.00% 0.00%
2013 0.00% 0.00%
2014 0.00% 5.00%

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.