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The 2011 Super Outbreak was the largest tornado outbreak spawned by a single weather system in recorded history; it produced 367 tornadoes from April 25–28, with 223 of those in a single 24-hour period on April 27 from midnight to midnight CDT, [4] [11] fifteen of which were violent EF4–EF5 tornadoes. 348 deaths occurred in that outbreak, of which 324 were tornado related.
Prior to 1950 in the United States, only significant tornadoes are listed for the number of tornadoes in outbreaks. Due to increasing detection, particularly in the U.S., numbers of counted tornadoes have increased markedly in recent decades although the number of actual tornadoes and counted significant tornadoes has not. In older events, the ...
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 increasing probability of record week-long heat extremes occurrence depends on warming rate, rather than global warming level. [32] [33] Some researchers attribute increases in extreme weather occurrences to more reliable reporting systems. [31] A difference in what qualifies as 'extreme weather' in varying climate systems could also be argued.
The deadliest tornado in modern U.S. history struck Joplin, Missouri, on May 22, 2011. It was the deadliest tornado since SPC records began in 1950. Nearly 1,000 were injured. The EF5 tornado had ...
The U.S. has endured a wild stretch of intense winter weather lately thanks to the polar vortex. Could climate change have caused this?
A study published last month in the academic journal Earth’s Future modeled the effects of warming on the creation of “convective environments” that can lead to tornadoes. The researchers ...
In the Americas, there are 15 tornadoes on record that caused at least 100 fatalities, the most recent being the Joplin EF5 tornado which killed 158 people in May 2011. There are at least 450 tornadoes on record that caused greater than ten fatalities; the most recent of these was the Rolling Fork, Mississippi EF4 tornado which killed 17 people ...