Nancy's Almanac: Nov. 19, 2013: Secondary tornado season draws on potent ingredients
Posted: Tuesday, November 19, 2013 12:00 am
Updated: 1:33 am, Tue May 20, 2014.
Late-season tornado outbreaks — like those that occurred in October in the Midlands and in November in the eastern United States — are rare but not as unusual as some might think.
October and November constitute a short, modest secondary peak in the number of tornadoes. The bump comes from the instability that accompanies the seasonal shift from summer into winter.
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Tuesday, November 19, 2013 12:00 am.
Updated: 1:33 am.