Brian Hartmann
EF0
On the subject of 'ranking' (for lack of a better term) yesterday, it would be interesting to examine not only a numerical index of the tornados themselves, as others have suggested in this thread, but to then combine those values with an analysis of the population density along the tracks.
Analysis of the true number of people at risk from yesterday's events might show that the death toll, while awful in absolute terms, was not necessarily unexpected in relative terms. A comparison of such data from numerous outbreaks would be valuable (1974, 1965, 4/26/91, 5/27/97, 5/3/99, etc) in determining risk for urban vs rural locales. Any of these events could have been much worse (or much less worse) had tornado tracks been just slightly different than they were.
Not to be overlooked, though, is the fact that Northern Alabama was essentially back in 1974 if the information about the communications infrastructure being out of commission pan out.
Brian
Analysis of the true number of people at risk from yesterday's events might show that the death toll, while awful in absolute terms, was not necessarily unexpected in relative terms. A comparison of such data from numerous outbreaks would be valuable (1974, 1965, 4/26/91, 5/27/97, 5/3/99, etc) in determining risk for urban vs rural locales. Any of these events could have been much worse (or much less worse) had tornado tracks been just slightly different than they were.
Not to be overlooked, though, is the fact that Northern Alabama was essentially back in 1974 if the information about the communications infrastructure being out of commission pan out.
Brian