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 8.70% 0.50%
1911 29.90% 5.50%
1912 0.00% 55.30%
1913 4.20% 16.10%
1914 2.40% 3.00%
1915 0.60% 25.80%
1916 4.50% 20.50%
1917 0.20% 52.20%
1918 3.00% 0.30%
1919 3.20% 11.10%
1920 0.30% 24.40%
1921 41.80% 0.40%
1922 1.00% 21.50%
1923 0.00% 7.10%
1924 6.60% 33.10%
1925 31.50% 0.40%
1926 17.60% 12.50%
1927 9.20% 0.80%
1928 1.80% 2.30%
1929 0.30% 30.20%
1930 2.50% 0.40%
1931 21.50% 2.90%
1932 8.60% 5.20%
1933 20.60% 16.70%
1934 57.70% 0.30%
1935 1.00% 1.50%
1936 1.50% 11.50%
1937 1.10% 31.10%
1938 10.10% 1.20%
1939 5.70% 0.10%
1940 12.30% 38.00%
1941 5.10% 11.30%
1942 0.00% 8.90%
1943 4.50% 3.00%
1944 4.30% 12.20%
1945 5.50% 1.60%
1946 24.30% 0.20%
1947 1.30% 14.00%
1948 0.20% 5.00%
1949 11.90% 19.90%
1950 8.80% 20.40%
1951 0.00% 7.60%
1952 11.50% 6.20%
1953 24.10% 0.60%
1954 20.00% 0.90%
1955 0.50% 19.20%
1956 0.60% 0.70%
1957 0.40% 7.20%
1958 5.20% 36.20%
1959 2.30% 0.00%
1960 0.00% 29.80%
1961 6.60% 3.20%
1962 0.00% 0.60%
1963 0.90% 1.00%
1964 2.00% 10.40%
1965 0.00% 9.80%
1966 0.40% 11.60%
1967 5.40% 4.00%
1968 0.30% 7.00%
1969 0.00% 11.70%
1970 0.20% 5.00%
1971 0.70% 3.80%
1972 12.80% 0.90%
1973 0.60% 17.60%
1974 8.60% 0.40%
1975 0.80% 24.80%
1976 9.20% 0.00%
1977 3.70% 0.40%
1978 0.00% 47.20%
1979 0.00% 56.60%
1980 0.20% 8.70%
1981 24.50% 0.20%
1982 0.00% 16.50%
1983 1.50% 27.90%
1984 2.40% 7.00%
1985 0.20% 1.50%
1986 34.80% 0.00%
1987 37.60% 2.20%
1988 11.10% 0.50%
1989 6.30% 0.20%
1990 25.60% 0.00%
1991 18.70% 0.40%
1992 28.20% 0.40%
1993 0.00% 22.20%
1994 15.60% 0.30%
1995 0.90% 0.40%
1996 13.20% 3.80%
1997 4.10% 2.00%
1998 16.70% 7.40%
1999 10.90% 0.50%
2000 58.00% 0.00%
2001 2.70% 0.00%
2002 20.40% 0.00%
2003 5.40% 5.60%
2004 9.20% 0.00%
2005 2.50% 1.20%
2006 60.20% 0.30%
2007 17.60% 1.60%
2008 5.00% 1.70%
2009 7.50% 0.20%
2010 9.40% 2.40%
2011 12.80% 8.00%
2012 82.90% 0.10%
2013 5.30% 1.60%
2014 19.50% 13.90%
2015 33.20% 4.10%

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.