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 32.50% 1.40%
1911 0.00% 22.90%
1912 0.00% 80.10%
1913 0.00% 67.00%
1914 0.00% 5.80%
1915 2.70% 47.20%
1916 0.00% 15.20%
1917 1.40% 14.90%
1918 0.00% 15.80%
1919 1.30% 46.30%
1920 0.00% 57.60%
1921 12.50% 0.00%
1922 1.40% 15.40%
1923 0.00% 62.50%
1924 1.50% 8.20%
1925 1.40% 2.80%
1926 5.40% 11.60%
1927 2.80% 0.00%
1928 0.00% 2.70%
1929 0.00% 33.50%
1930 1.40% 15.50%
1931 2.70% 10.30%
1932 0.00% 23.80%
1933 7.00% 2.90%
1934 85.50% 0.00%
1935 1.40% 1.50%
1936 4.20% 0.00%
1937 1.50% 0.00%
1938 0.00% 2.80%
1939 9.50% 0.00%
1940 8.10% 1.50%
1941 0.00% 60.10%
1942 0.00% 4.20%
1943 13.90% 0.00%
1944 0.00% 24.50%
1945 1.40% 5.80%
1946 4.30% 1.50%
1947 0.00% 0.00%
1948 0.00% 2.70%
1949 0.00% 11.40%
1950 40.30% 0.00%
1951 0.00% 6.80%
1952 0.00% 4.10%
1953 2.90% 0.00%
1954 60.20% 0.00%
1955 0.00% 6.90%
1956 10.00% 0.00%
1957 0.00% 15.30%
1958 10.90% 0.00%
1959 0.00% 0.00%
1960 0.00% 5.60%
1961 0.00% 8.40%
1962 0.00% 0.00%
1963 5.50% 0.00%
1964 0.00% 26.50%
1965 0.00% 16.80%
1966 0.00% 0.00%
1967 0.00% 0.00%
1968 0.00% 12.30%
1969 0.00% 2.80%
1970 0.00% 0.00%
1971 0.00% 2.80%
1972 0.00% 0.00%
1973 0.00% 22.30%
1974 0.00% 0.00%
1975 0.00% 30.30%
1976 0.00% 1.50%
1977 13.80% 0.00%
1978 0.00% 0.00%
1979 0.00% 11.20%
1980 0.00% 0.00%
1981 31.80% 0.00%
1982 0.00% 36.20%
1983 0.00% 15.50%
1984 0.00% 35.70%
1985 0.00% 10.80%
1986 2.70% 1.40%
1987 1.30% 8.60%
1988 2.60% 1.40%
1989 40.60% 0.00%
1990 0.00% 0.00%
1991 0.00% 8.50%
1992 5.30% 5.70%
1993 0.00% 16.10%
1994 21.80% 0.00%
1995 7.30% 0.00%
1996 50.20% 0.00%
1997 0.00% 4.30%
1998 4.30% 1.40%
1999 52.10% 0.00%
2000 80.60% 0.00%
2001 33.20% 0.00%
2002 54.30% 0.00%
2003 79.00% 0.00%
2004 0.00% 0.00%
2005 12.50% 0.00%
2006 28.40% 0.00%
2007 53.20% 0.00%
2008 2.80% 0.00%
2009 11.80% 0.00%
2010 0.00% 0.00%
2011 23.10% 0.00%
2012 98.50% 0.00%
2013 0.00% 1.30%
2014 53.70% 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.