This comment gave me an excuse to revisit this page.
Anonymous writes: "perhaps you have not seen these graphs of tornado activity: http://www.ncdc.noaa.gov/climate-information/extreme-events/us-tornado-climatology/trends i see no obvious tend in overall activity, but a clear drop in extreme tornado activity."~ ~ ~
http://www.ncdc.noaa.gov/sotc/tornadoes/2012/1
Could global warming change tornado season, too?Speaking of more than tornadoes to worry about:
http://phys.org/news/2013-03-global-tornado-season.html
Global warming is likely to increase severe thunderstorm conditions in U.S., research finds
http://www.sciencedaily.com/releases/2013/09/130923155542.htm