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List of costliest tornadoes in the Americas

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The following is a list of the costliest tornadoes in the Americas including Canada and the United States. It includes all tornadoes that, when damage totals are adjusted for inflation, have cost at least $100 million in damages (in 2024 dollars).

As of September 18, 2024, there are 165 entries on this list with several of those entries including multiple tornadoes. This is dependent on how damages are assessed by certain agencies as well as the significance of certain events (e.g. 1980 Grand Island tornado outbreak when seven tornadoes struck the city of Grand Island, Nebraska in the same night; and the DunrobinOttawa, OntarioGatineau, Quebec, Canada tornadoes in 2018 — of which there were seven — since monetary damages in Canada are often reported by province and not by individual tornado).

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Analysis

  • Besides being one of the deadliest tornadoes on record in the Americas, the 1896 St. Louis–East St. Louis tornado is also the costliest; when adjusted for inflation and changes in wealth, it resulted in nearly $5.9 billion in damages.
  • When adjusted for inflation, a total of thirteen (13) tornadoes/events have (each) caused in excess of $1 billion in damages;
  • a total of thirty-two (32) tornadoes/events have (each) caused in excess of $500 million in damages;
  • and a total of sixty-seven (67) tornadoes/events have caused in excess of $250 million in damages.
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List of costliest tornadoes

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Bibliography

  • Grazulis, Thomas (1993). Significant Tornadoes 1680–1991. St. Johnsbury, Vermont: The Tornado Project of Environmental Films. ISBN 1-879362-03-1.
  • Grazulis, Thomas (1997). Significant Tornadoes Update, 1992–1995. St. Johnsbury, Vermont: The Tornado Project of Environmental Films. ISBN 1-879362-04-X.
  • Grazulis, Thomas (2023). Significant Tornadoes 1974-2022. St. Johnsbury, Vermont: The Tornado Project of Environmental Films. ISBN 1-879362-01-5.

See also

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Notes

  1. These are the communities (e.g. cities, towns, counties) where the greatest damage or loss of life occurred or at the beginning or end of the tornado’s track. The number of places that experience loss of life or damage is often higher than this. Colloquial tornado/event names, if applicable/known, are included in the Notes column of this table.
  2. Estimated total damages are primarily taken from the NCEI database; however, before 1996, coding included on the Storm Data reports provided an extremely broad, often inaccurate, range for damage totals. If a more accurate or updated total can be obtained from a reputable source, it will be included here instead.
  3. Wikipedia formulas only allow adjusting damage totals (for inflation) through 2021. Adjustments of damage totals for inflation and wealth changes have been calculated with the website in2013dollars.com and Charles A. Doswell's 1997 paper which includes rates of inflation through the current year and normalised damage values. As these rates can be volatile (possibly changing from month to month), note that these calculations were made on May 15, 2023 and will be updated regularly.
  4. After the Fujita Scale was implemented in 1971, tornadoes from the previous 100 years (1871-1971) were retrospectively reviewed to determine their ratings. These reviews were completed by either Ted Fujita or Thomas P. Grazulis. Damage assessments from 1971-2006 were completed by using the Fujita Scale or, since 2007, the Enhanced Fujita Scale. These reviews have been handled by teams of meteorologists and structural engineers as assigned by National Weather Service (NWS) offices around the United States.
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References

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