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A destructive outbreak ended only 17 hours before the Super Outbreak began in the same areas. (10 significant, 3 violent, 4 killer) [114] 1974 Super Outbreak: April 3–4, 1974: Eastern United States – Ontario: 148: 315 fatalities: The second-largest and most violent tornado outbreak ever documented. At least 50 of them were killers.
Tracks of the 1974 Super Outbreak's 147 known tornadoes in the United States and fatalities by county. This is the list of tornadoes confirmed that occurred during the record-breaking 1974 Super Outbreak tornado event that occurred on April 3–4, 1974 across the eastern half of the United States and in Ontario, Canada.
The 1974 Super Outbreak was the second-largest tornado outbreak on record for a single 24-hour period, just behind the 2011 Super Outbreak. It was also the most violent tornado outbreak ever recorded, with 30 violent (F4 or F5 rated) tornadoes confirmed.
In late 2023, American meteorologist and tornado expert Thomas P. Grazulis created the Outbreak Intensity Score (OIS) as a way to rank tornado outbreaks. [1] [2] For the score, only significant tornadoes are counted: F2/EF2 tornadoes receive 2 points each, F3/EF3 tornadoes receive 5 points each, F4/EF4 tornadoes receive 10 points each, and F5/EF5 tornadoes receive 15 points each. [1]
Damage caused by the 1983 Los Angeles tornado This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources. The U.S. state of California experiences several tornadoes every year, with at least 488 twisters [nb 1] recorded since 1891. Among these are four fire whirls, a type of tornado that develops ...
The worst fire in California history destroyed more than 18,000 structures in Northern California. ... 1974 Super Outbreak: Ontario, Illinois, Indiana, ...
List of tornadoes in the 2011 Super Outbreak: Atkins—Clinton—Mountain View—Highland, Arkansas: 2008 February 5 $119,310,000 $170,909,055: EF4 List of tornadoes in the 2008 Super Tuesday tornado outbreak: Wildwood—Lady Lake, Florida: 2007 February 2 $114,000,000 $169,572,677: EF3 2007 Groundhog Day tornado outbreak: Monroe—Athens ...
Tornado outbreak sequence of May 2004; List of tornadoes in the May 2004 tornado outbreak sequence; Southern Ontario tornado outbreak of 2005; List of tornadoes in the outbreak of May 22–27, 2008; Southern Ontario Tornado Outbreak of 2009; Tornado outbreak of June 5–6, 2010; 2011 Super Outbreak; 2011 Goderich tornado; Tornado outbreak of ...