However, the total number of
tornadoes in those
outbreaks jumped dramatically: In 1965, the
worst outbreak included about 40
tornadoes, but in 2015 that number had statistically grown to include nearly 80 ground - scouring twisters, the researchers report online today in Science.
The
worst recorded
outbreak, according to Ted Fujita, had taken place in April 1974, when 148
tornadoes touched down in a day, producing 2,400 miles of damage path.