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 11.00% 8.50%
1911 0.00% 19.70%
1912 0.00% 52.70%
1913 0.00% 36.00%
1914 0.00% 22.60%
1915 2.70% 0.00%
1916 0.00% 27.80%
1917 25.00% 2.80%
1918 16.80% 0.00%
1919 25.00% 0.00%
1920 2.90% 2.80%
1921 8.50% 0.00%
1922 5.40% 0.00%
1923 0.00% 61.40%
1924 5.40% 8.40%
1925 0.00% 8.50%
1926 38.70% 0.00%
1927 0.00% 8.60%
1928 8.40% 5.80%
1929 8.60% 0.00%
1930 5.70% 0.00%
1931 47.40% 0.00%
1932 2.90% 5.60%
1933 19.20% 5.80%
1934 0.00% 0.00%
1935 16.60% 0.00%
1936 14.10% 0.00%
1937 2.70% 0.00%
1938 10.70% 3.00%
1939 8.00% 0.00%
1940 29.90% 2.80%
1941 0.00% 33.50%
1942 0.00% 0.00%
1943 0.00% 30.40%
1944 0.00% 50.20%
1945 2.80% 5.70%
1946 0.00% 0.00%
1947 2.80% 32.60%
1948 0.00% 14.00%
1949 0.00% 0.00%
1950 8.50% 0.00%
1951 2.70% 11.30%
1952 0.00% 5.70%
1953 0.00% 32.70%
1954 0.00% 29.90%
1955 0.00% 0.00%
1956 0.00% 0.00%
1957 8.60% 0.00%
1958 0.00% 0.00%
1959 33.70% 0.00%
1960 55.30% 0.00%
1961 52.40% 0.00%
1962 0.00% 3.00%
1963 0.00% 57.90%
1964 0.00% 0.00%
1965 0.00% 80.80%
1966 0.00% 0.00%
1967 5.30% 2.80%
1968 0.00% 13.90%
1969 0.00% 0.00%
1970 5.40% 0.00%
1971 0.00% 0.00%
1972 2.80% 0.00%
1973 0.00% 0.00%
1974 0.00% 0.00%
1975 0.00% 16.70%
1976 2.80% 60.40%
1977 5.40% 0.00%
1978 2.90% 0.00%
1979 3.00% 0.00%
1980 0.00% 33.20%
1981 53.40% 0.00%
1982 0.00% 39.20%
1983 5.70% 46.60%
1984 5.60% 2.80%
1985 22.30% 0.00%
1986 2.70% 0.00%
1987 0.00% 8.60%
1988 8.10% 0.00%
1989 0.00% 0.00%
1990 0.00% 0.00%
1991 0.00% 11.50%
1992 0.00% 0.00%
1993 5.60% 40.80%
1994 33.40% 0.00%
1995 0.00% 16.60%
1996 47.70% 0.00%
1997 0.00% 0.00%
1998 0.00% 0.00%
1999 0.00% 11.20%
2000 11.20% 0.00%
2001 16.70% 0.00%
2002 35.90% 0.00%
2003 52.30% 0.00%
2004 8.30% 0.00%
2005 0.00% 0.00%
2006 58.60% 0.00%
2007 44.50% 0.00%
2008 45.40% 0.00%
2009 2.60% 0.00%
2010 0.00% 2.80%
2011 3.00% 14.00%
2012 25.00% 2.80%
2013 35.80% 0.00%
2014 30.30% 0.00%
2015 30.30% 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.