Data scarcity is a limiting factor, with researchers needing at least four decades worth of weather data before they can confidently establish a cause-and-effect relationship.
Recent years, however, have witnessed an increase in ‘clusters’ of tornado occurrences, and there seems to be an eastward shift in the so-called ‘Tornado Alley’.
This, coupled with the unpredictability of tornado seasons starting earlier or later than decades before, has added an element of perplexity to these meteorological events.
By Sunday evening, the severe weather had moved past central Indiana, heading east into Kentucky and Ohio, yet the tornado watches remained active in several counties in both Indiana and Kentucky.
The tornado in Greenwood, Indiana, forms part of this larger picture of shifting weather patterns and unanticipated severe weather events.