Tornado activity is now much more likely to impact ... The scale runs from EF0 up to EF5 for the most damaging twisters.) ...

But a new study released in the Journal of Applied Meteorology and Climatology has concluded that major tornado activity has now moved towards Mississippi, Louisiana, Alabama, Virginia ...

In the past decade, however, the line has shifted eastward by about 200 miles, increasing tornado activity over a large ... Our interactive map, which contains data from January 1950 to Sept.