Tornado outbreak sequence
A tornado outbreak sequence (or extended tornado outbreak) is a period of continuous or nearly continuous high tornado activity consisting of a series of tornado outbreaks over multiple days with no or very few days lacking tornado outbreaks.[1]
Major tornado outbreak sequences occurred in the United States in May 1917, 1930, 1949, and 2003.[2][3] Another exceptional outbreak sequence apparently occurred during mid to late May 1896.[4] Although some days lacked tornado outbreaks, the period from mid to late April 2011 also was a period of especially high tornado activity.
Tornado outbreak sequences tend to dominate the tornado statistics for a year and often cause a spike in tornado numbers for the entire year. Not all periods of active tornado occurrences are outbreak sequences, there must be no break in the activity to satisfy the definition.
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[edit] External links
- ^ Schneider, Russell; H.E. Brooks, and J.T. Schaefer (Oct 2004). "Tornado Outbreak Day Sequences: historic events and climatology (1875-2003)". 22nd Conference on Severe Local Storms. Hyannis, MA: American Meteorological Society. http://ams.confex.com/ams/11aram22sls/techprogram/paper_81933.htm.
- ^ Hamill, Thomas M.; R.S. Schneider, H.E. Brooks, G.S. Forbes, H.B. Bluestein, M. Steinberg, D. Meléndez, and R.M. Dole (Apr 2005). "The May 2003 Extended Tornado Outbreak". Bulletin of the American Meteorological Society (American Meteorological Society) 86 (4): 531–42. Bibcode 2005BAMS...86..531H. doi:10.1175/BAMS-86-4-531. http://ams.allenpress.com/perlserv/?request=get-abstract&doi=10.1175%2FBAMS-86-4-531.
- ^ Hamill, T.M.; et al. (Apr 2005). "Supplement to: The May 2003 Extended Tornado Outbreak". Bulletin of the American Meteorological Society (American Meteorological Society) 86 (4): ES3–ES16. Bibcode 2005BAMS...86S...3H. doi:10.1175/BAMS-86-4-HamillA. http://ams.allenpress.com/perlserv/?request=get-abstract&doi=10.1175%2FBAMS-86-4-HamillA.
- ^ Grazulis, Tom; Doris Grazulis. "1896 Tornadoes". The Tornado Project. http://tornadoproject.com/past/pastts95.htm#1896. Retrieved 2008-05-08.
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