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So whether tornadoes are increasing in frequency the way that hurricanes and heat waves are remains unclear. Many more tornadoes were recorded in the last 20 years than in the previous two ...
Experts say 2024’s tornado outbreaks set it apart, even in a year full of extreme weather. The U.S. recorded the highest number of tornadoes in a decade.
But meteorologist have noticed a shift toward the Southeast as the frequency of tornadoes increase in Southern states like Tennessee, Mississippi, Louisiana and Alabama over the years.
For example, the tornado frequency of Southwestern Ontario is about half that of the most tornado-prone areas of the central US plains. The last multiple tornado-related deaths in Canada were caused by a tornado in Ear Falls, Ontario on 9 July 2009, where 3 died, and the last killer tornado was on 21 June 2021 in Mascouche, Quebec . [ 49 ]
The rate of occurrence drops off quickly with increasing strength—violent tornadoes (F4/T8 or stronger), account for less than one percent of all tornado reports. [6] Worldwide, strong tornadoes account for an even smaller percentage of total tornadoes. Violent tornadoes are extremely rare outside of the United States and Canada.
In the United States, the year started off somewhat slow with a below average number of tornadoes through the first three months. However, the El Niño pattern that was in place during that period weakened in April; the pattern shift caused the more traditional Tornado Alley zone to rapidly become extremely favorable for tornado outbreaks, and several large outbreaks occurred in late spring.
But meteorologist have noticed a shift toward the Southeast as the frequency of tornadoes increase in Southern states like Tennessee, ... 20 U.S. states saw an increase in tornado activity ...
Some countries have meteorological agencies which distribute tornado forecasts and increase levels of alert of a possible tornado (such as tornado watches and warnings in the United States and Canada). Weather radios provide an alarm when a severe weather advisory is issued for the local area, mainly available only in the United States. Unless ...