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% 17.20%
1911 20.10% 0.00%
1912 0.00% 78.70%
1913 4.00% 0.00%
1914 0.00% 2.60%
1915 0.00% 0.00%
1916 0.00% 14.30%
1917 0.00% 97.30%
1918 0.00% 0.00%
1919 5.40% 0.00%
1920 0.00% 6.60%
1921 96.00% 0.00%
1922 4.10% 0.00%
1923 0.00% 0.00%
1924 0.00% 90.60%
1925 1.30% 0.00%
1926 0.00% 9.00%
1927 5.40% 0.00%
1928 0.00% 2.70%
1929 0.00% 42.80%
1930 0.00% 5.30%
1931 82.60% 0.00%
1932 1.40% 1.30%
1933 16.10% 0.00%
1934 1.30% 0.00%
1935 0.00% 0.00%
1936 0.00% 1.30%
1937 0.00% 1.30%
1938 40.70% 0.00%
1939 2.60% 0.00%
1940 0.00% 46.70%
1941 27.40% 0.00%
1942 0.00% 0.00%
1943 0.00% 7.90%
1944 0.00% 1.40%
1945 0.00% 0.00%
1946 13.20% 0.00%
1947 0.00% 4.10%
1948 0.00% 0.00%
1949 8.10% 0.00%
1950 0.00% 33.80%
1951 0.00% 17.00%
1952 0.00% 1.30%
1953 0.00% 0.00%
1954 18.40% 0.00%
1955 0.00% 0.00%
1956 0.00% 0.00%
1957 4.10% 0.00%
1958 0.00% 41.20%
1959 0.00% 0.00%
1960 0.00% 21.40%
1961 0.00% 1.30%
1962 0.00% 1.30%
1963 0.00% 69.90%
1964 0.00% 0.00%
1965 0.00% 0.00%
1966 0.00% 29.20%
1967 0.00% 1.30%
1968 0.00% 10.90%
1969 0.00% 8.10%
1970 0.00% 0.00%
1971 0.00% 0.00%
1972 0.00% 0.00%
1973 62.50% 0.00%
1974 0.00% 0.00%
1975 2.70% 0.00%
1976 0.00% 88.30%
1977 0.00% 0.00%
1978 0.00% 72.10%
1979 0.00% 59.10%
1980 0.00% 3.90%
1981 0.00% 5.30%
1982 0.00% 0.00%
1983 0.00% 0.00%
1984 0.00% 0.00%
1985 0.00% 0.00%
1986 22.50% 0.00%
1987 40.10% 0.00%
1988 0.00% 20.20%
1989 0.00% 22.20%
1990 57.50% 0.00%
1991 71.30% 0.00%
1992 0.00% 0.00%
1993 0.00% 1.30%
1994 0.00% 0.00%
1995 0.00% 0.00%
1996 0.00% 11.70%
1997 0.00% 1.30%
1998 98.70% 0.00%
1999 7.90% 0.00%
2000 0.00% 0.00%
2001 29.60% 0.00%
2002 46.00% 0.00%
2003 0.00% 0.00%
2004 10.80% 0.00%
2005 27.90% 0.00%
2006 77.10% 0.00%
2007 32.20% 0.00%
2008 0.00% 0.00%
2009 0.00% 0.00%
2010 1.30% 0.00%
2011 35.50% 0.00%
2012 94.70% 0.00%
2013 2.60% 3.90%
2014 0.00% 41.50%
2015 24.10% 1.30%

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.