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 45.30% 0.00%
1911 23.00% 1.40%
1912 5.60% 19.70%
1913 0.00% 25.70%
1914 11.10% 0.00%
1915 6.70% 5.80%
1916 4.40% 2.70%
1917 0.00% 89.90%
1918 5.80% 1.30%
1919 17.20% 0.00%
1920 0.00% 28.00%
1921 5.80% 0.00%
1922 0.00% 44.40%
1923 0.00% 17.80%
1924 0.00% 32.30%
1925 28.50% 0.00%
1926 31.20% 0.00%
1927 1.50% 4.20%
1928 16.80% 1.50%
1929 0.00% 16.70%
1930 2.60% 2.90%
1931 0.00% 13.70%
1932 0.00% 10.00%
1933 0.00% 56.40%
1934 75.90% 0.00%
1935 0.00% 0.00%
1936 5.80% 0.00%
1937 1.40% 0.00%
1938 1.30% 3.00%
1939 7.20% 0.00%
1940 20.70% 0.00%
1941 7.00% 0.00%
1942 0.00% 35.00%
1943 7.20% 0.00%
1944 0.00% 27.10%
1945 0.00% 25.40%
1946 7.00% 1.40%
1947 6.90% 0.00%
1948 0.00% 17.00%
1949 1.30% 1.40%
1950 0.00% 19.30%
1951 0.00% 5.40%
1952 0.00% 4.10%
1953 0.00% 22.40%
1954 1.50% 1.40%
1955 0.00% 40.20%
1956 0.00% 2.90%
1957 0.00% 1.40%
1958 0.00% 1.40%
1959 0.00% 1.30%
1960 0.00% 0.00%
1961 0.00% 0.00%
1962 0.00% 5.60%
1963 4.20% 5.60%
1964 0.00% 41.90%
1965 0.00% 25.70%
1966 0.00% 0.00%
1967 4.40% 2.90%
1968 0.00% 11.20%
1969 0.00% 8.60%
1970 0.00% 46.90%
1971 0.00% 35.90%
1972 1.40% 1.50%
1973 0.00% 18.70%
1974 10.10% 1.50%
1975 0.00% 63.90%
1976 0.00% 1.40%
1977 1.40% 22.80%
1978 10.90% 0.00%
1979 0.00% 0.00%
1980 0.00% 11.50%
1981 17.90% 0.00%
1982 0.00% 2.70%
1983 0.00% 11.60%
1984 0.00% 4.20%
1985 14.10% 0.00%
1986 36.10% 0.00%
1987 4.00% 2.90%
1988 1.30% 1.50%
1989 64.80% 0.00%
1990 34.80% 0.00%
1991 4.20% 17.40%
1992 76.60% 0.00%
1993 8.50% 0.00%
1994 29.00% 0.00%
1995 0.00% 1.50%
1996 8.70% 0.00%
1997 14.60% 1.30%
1998 0.00% 14.40%
1999 2.80% 1.30%
2000 65.20% 0.00%
2001 46.10% 0.00%
2002 1.50% 2.80%
2003 16.40% 0.00%
2004 87.40% 0.00%
2005 2.90% 0.00%
2006 22.90% 0.00%
2007 38.20% 0.00%
2008 0.00% 20.60%
2009 18.90% 0.00%
2010 0.00% 8.20%
2011 10.00% 1.30%
2012 39.00% 1.40%
2013 16.10% 0.00%
2014 13.10% 0.00%
2015 16.70% 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.