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 10.20% 0.50%
1911 26.80% 5.50%
1912 0.00% 58.40%
1913 4.80% 20.10%
1914 2.50% 3.50%
1915 0.50% 30.10%
1916 2.80% 15.80%
1917 0.30% 48.30%
1918 2.20% 1.00%
1919 5.60% 13.80%
1920 0.30% 25.40%
1921 41.30% 0.30%
1922 0.30% 19.90%
1923 0.00% 6.90%
1924 5.30% 37.00%
1925 30.60% 0.20%
1926 18.20% 12.10%
1927 9.10% 1.50%
1928 1.50% 2.70%
1929 0.30% 26.80%
1930 8.40% 0.40%
1931 26.70% 3.30%
1932 10.80% 5.40%
1933 22.10% 10.50%
1934 64.10% 0.30%
1935 0.70% 1.20%
1936 2.60% 2.50%
1937 0.60% 21.00%
1938 7.20% 1.00%
1939 8.70% 0.10%
1940 10.10% 33.90%
1941 4.80% 13.90%
1942 0.00% 6.70%
1943 5.90% 1.40%
1944 5.30% 14.40%
1945 2.40% 1.60%
1946 22.50% 0.00%
1947 0.50% 17.00%
1948 0.20% 6.60%
1949 12.60% 18.30%
1950 2.00% 22.20%
1951 0.00% 10.20%
1952 15.30% 6.00%
1953 19.90% 0.40%
1954 33.00% 1.20%
1955 1.70% 22.30%
1956 1.10% 3.10%
1957 0.70% 4.20%
1958 5.30% 38.60%
1959 4.80% 0.40%
1960 0.00% 28.40%
1961 6.90% 3.60%
1962 0.00% 3.20%
1963 1.70% 1.90%
1964 4.00% 8.30%
1965 0.00% 13.00%
1966 0.40% 8.60%
1967 1.30% 2.90%
1968 0.30% 9.70%
1969 0.00% 11.60%
1970 0.20% 4.70%
1971 0.60% 4.50%
1972 9.10% 1.60%
1973 0.30% 18.70%
1974 7.70% 0.30%
1975 0.70% 24.20%
1976 6.80% 0.00%
1977 4.50% 0.20%
1978 0.00% 44.20%
1979 0.00% 57.20%
1980 0.30% 2.20%
1981 19.70% 0.20%
1982 0.00% 18.20%
1983 0.60% 23.60%
1984 2.50% 8.00%
1985 0.60% 1.30%
1986 25.90% 0.00%
1987 27.40% 2.10%
1988 14.80% 0.70%
1989 6.90% 0.50%
1990 17.50% 0.00%
1991 17.60% 0.20%
1992 22.60% 0.60%
1993 0.00% 28.50%
1994 16.40% 0.30%
1995 1.40% 0.90%
1996 12.70% 8.40%
1997 3.70% 2.00%
1998 19.20% 5.90%
1999 13.60% 1.00%
2000 45.50% 0.00%
2001 2.50% 0.00%
2002 24.80% 0.00%
2003 17.20% 7.00%
2004 8.60% 0.00%
2005 4.30% 0.20%
2006 65.20% 0.00%
2007 21.00% 3.60%
2008 3.90% 2.00%
2009 7.60% 0.60%
2010 10.00% 1.70%
2011 16.30% 8.40%
2012 82.80% 0.10%
2013 6.80% 3.40%
2014 20.30% 18.70%
2015 30.50% 3.90%

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.