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 0.70% 3.80%
1911 23.40% 1.00%
1912 0.70% 43.70%
1913 17.00% 9.80%
1914 32.30% 0.10%
1915 0.00% 1.40%
1916 15.50% 21.90%
1917 3.10% 16.70%
1918 2.60% 52.60%
1919 9.80% 7.70%
1920 2.70% 8.70%
1921 27.10% 0.50%
1922 0.20% 21.60%
1923 24.10% 0.00%
1924 0.00% 19.50%
1925 2.00% 9.00%
1926 1.70% 3.70%
1927 2.40% 0.20%
1928 1.40% 0.20%
1929 0.40% 26.40%
1930 0.00% 45.30%
1931 15.60% 0.60%
1932 32.20% 10.50%
1933 42.20% 5.50%
1934 23.20% 0.70%
1935 5.10% 0.40%
1936 0.50% 8.90%
1937 20.70% 54.30%
1938 3.40% 0.00%
1939 22.10% 0.00%
1940 2.90% 45.50%
1941 13.50% 0.20%
1942 1.10% 2.90%
1943 0.00% 3.20%
1944 10.70% 3.40%
1945 1.30% 5.00%
1946 0.50% 1.10%
1947 6.50% 6.20%
1948 0.30% 16.60%
1949 20.50% 40.40%
1950 28.90% 23.30%
1951 0.00% 0.60%
1952 23.40% 0.40%
1953 42.40% 0.00%
1954 2.10% 1.50%
1955 0.00% 4.60%
1956 11.40% 1.00%
1957 5.40% 17.80%
1958 7.40% 1.90%
1959 2.50% 0.80%
1960 0.00% 3.30%
1961 1.20% 8.20%
1962 0.00% 16.80%
1963 0.00% 57.30%
1964 0.40% 5.50%
1965 6.20% 0.00%
1966 0.10% 10.00%
1967 7.20% 1.80%
1968 0.40% 3.80%
1969 12.00% 7.70%
1970 7.40% 21.90%
1971 1.20% 1.80%
1972 3.10% 3.30%
1973 0.00% 3.60%
1974 15.40% 0.80%
1975 0.60% 0.50%
1976 0.00% 4.00%
1977 0.00% 50.80%
1978 16.60% 39.10%
1979 0.00% 55.70%
1980 11.90% 0.80%
1981 19.50% 12.10%
1982 0.00% 32.60%
1983 21.00% 0.00%
1984 0.70% 6.20%
1985 0.00% 22.10%
1986 25.50% 0.50%
1987 6.90% 0.80%
1988 0.00% 3.90%
1989 17.90% 2.40%
1990 47.40% 0.00%
1991 0.70% 0.20%
1992 24.30% 0.40%
1993 10.80% 1.20%
1994 9.50% 11.90%
1995 19.60% 0.00%
1996 2.10% 1.20%
1997 2.20% 0.20%
1998 43.10% 0.00%
1999 14.00% 0.00%
2000 12.60% 0.00%
2001 4.50% 2.00%
2002 21.00% 0.00%
2003 32.30% 1.80%
2004 3.10% 1.20%
2005 26.80% 0.00%
2006 60.30% 0.20%
2007 6.50% 6.30%
2008 1.10% 0.80%
2009 2.20% 2.60%
2010 12.50% 1.00%
2011 0.30% 2.10%
2012 13.60% 0.00%
2013 3.90% 7.40%
2014 4.60% 20.30%
2015 11.70% 0.10%
2016 6.00% 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.