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 0.00% 23.30%
1911 61.50% 0.00%
1912 1.70% 8.00%
1913 9.30% 0.00%
1914 0.00% 1.60%
1915 0.00% 1.70%
1916 0.00% 1.70%
1917 0.00% 70.70%
1918 4.90% 1.50%
1919 17.90% 0.00%
1920 0.00% 11.20%
1921 72.00% 0.00%
1922 64.90% 0.00%
1923 4.90% 0.00%
1924 0.00% 36.50%
1925 17.90% 0.00%
1926 0.00% 3.10%
1927 42.20% 1.50%
1928 0.00% 3.40%
1929 1.60% 1.50%
1930 0.00% 1.60%
1931 4.60% 0.00%
1932 27.80% 0.00%
1933 38.80% 0.00%
1934 0.00% 1.50%
1935 3.30% 0.00%
1936 0.00% 0.00%
1937 0.00% 0.00%
1938 6.50% 0.00%
1939 0.00% 0.00%
1940 0.00% 79.10%
1941 0.00% 1.60%
1942 0.00% 3.40%
1943 0.00% 14.90%
1944 0.00% 0.00%
1945 3.20% 0.00%
1946 11.50% 0.00%
1947 0.00% 0.00%
1948 8.60% 0.00%
1949 70.60% 0.00%
1950 0.00% 0.00%
1951 0.00% 0.00%
1952 0.00% 0.00%
1953 1.50% 0.00%
1954 0.00% 0.00%
1955 0.00% 0.00%
1956 1.50% 3.50%
1957 25.70% 0.00%
1958 0.00% 52.80%
1959 1.70% 0.00%
1960 0.00% 38.50%
1961 0.00% 8.20%
1962 0.00% 4.60%
1963 0.00% 88.30%
1964 0.00% 4.80%
1965 0.00% 0.00%
1966 0.00% 44.40%
1967 0.00% 48.00%
1968 0.00% 87.70%
1969 0.00% 45.50%
1970 0.00% 5.00%
1971 0.00% 0.00%
1972 0.00% 0.00%
1973 6.20% 0.00%
1974 0.00% 0.00%
1975 0.00% 0.00%
1976 0.00% 90.40%
1977 0.00% 6.80%
1978 0.00% 28.80%
1979 0.00% 9.80%
1980 0.00% 1.70%
1981 0.00% 66.50%
1982 8.40% 0.00%
1983 0.00% 14.80%
1984 0.00% 0.00%
1985 4.90% 0.00%
1986 30.70% 0.00%
1987 0.00% 1.70%
1988 0.00% 52.70%
1989 1.70% 0.00%
1990 69.10% 0.00%
1991 83.80% 0.00%
1992 0.00% 0.00%
1993 0.00% 0.00%
1994 10.20% 1.50%
1995 0.00% 0.00%
1996 0.00% 1.60%
1997 3.30% 1.50%
1998 96.70% 0.00%
1999 1.60% 0.00%
2000 0.00% 3.20%
2001 0.00% 0.00%
2002 38.50% 0.00%
2003 4.90% 0.00%
2004 37.90% 0.00%
2005 14.30% 0.00%
2006 10.90% 0.00%
2007 33.80% 0.00%
2008 0.00% 0.00%
2009 6.50% 0.00%
2010 1.50% 6.80%
2011 27.10% 1.70%
2012 85.40% 0.00%
2013 16.70% 0.00%
2014 0.00% 8.10%

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.