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Researchers reported a clear eastward redistribution of tornado activity from 1979 to 2017. The study compared confirmed tornado reports with the Significant Tornado Parameter and found the same pattern in both, which strengthens confidence in the signal. The authors identified fewer events across parts of the Plains and more across the lower Midwest and Southeast. A science release summarizing the work highlighted increasing trends in Mississippi, Alabama, Arkansas, Missouri, Illinois, Indiana, Tennessee, and Kentucky. These findings anchor today’s planning decisions.

