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 0.00% 23.30%
1911 59.80% 0.00%
1912 1.70% 8.00%
1913 7.80% 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 16.40% 0.00%
1920 0.00% 11.20%
1921 72.00% 0.00%
1922 63.30% 0.00%
1923 1.60% 0.00%
1924 0.00% 36.50%
1925 14.60% 0.00%
1926 0.00% 3.10%
1927 40.60% 1.50%
1928 0.00% 3.40%
1929 1.60% 1.50%
1930 0.00% 1.60%
1931 4.60% 0.00%
1932 24.50% 0.00%
1933 35.60% 0.00%
1934 0.00% 1.50%
1935 3.30% 0.00%
1936 0.00% 0.00%
1937 0.00% 0.00%
1938 4.90% 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 8.30% 0.00%
1947 0.00% 0.00%
1948 8.60% 0.00%
1949 65.60% 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 0.00% 3.50%
1957 19.20% 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 4.70% 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 3.30% 0.00%
1986 27.60% 0.00%
1987 0.00% 1.70%
1988 0.00% 54.30%
1989 1.70% 0.00%
1990 60.90% 0.00%
1991 80.50% 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 33.50% 0.00%
2003 0.00% 0.00%
2004 33.10% 0.00%
2005 6.40% 0.00%
2006 6.10% 0.00%
2007 27.30% 0.00%
2008 0.00% 0.00%
2009 6.50% 0.00%
2010 1.50% 6.80%
2011 25.50% 1.70%
2012 83.70% 0.00%
2013 16.70% 0.00%
2014 1.60% 8.10%
2015 92.10% 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.