| Top 10 Costliest U.S. Catastrophes Involving Tornadoes (1) |
($ millions)
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Estimated insured loss |
| Rank |
Date |
Event |
Location |
Dollars when
occurred |
In 2024 dollars (2) |
| 1 |
Aug. 8-12, 2020 |
Midwest Derecho |
IA, IL, IN, KS, MI, MN, MO, NE, OH, SD,
WI, PA, DC, MD, VA, WV |
$9,200 |
$11,158 |
| 2 |
Apr. 22-28, 2011 |
Tornado Outbreak |
AL, AR, GA, IL, KY, LA, MO, MS, OH,
OK, TN, TX, VA |
7,560 |
10,611 |
| 3 |
May 21-27, 2011 |
Joplin, MO Tornado |
AR, GA, IA, IL, IN, KS, KY, MI, MN, MO,
NC, NE, NY, OH, OK, PA, TN, TX, VA, WI |
7,000 |
9,779 |
| 4 |
May 2-11, 2003 |
SCS Outbreak |
AL, AR, CO, GA, IA, IL, IN, KS, KY, MO,
MS, NC, NE, OH, OK, SC, SD, TN |
3,300 |
5,677 |
| 5 |
May 6-10, 2024 |
SCS Outbreak |
AL, AR, CO, FL, GA, IL, IN, KS, KY, LA, MI,
MO, MS, NC, OH, OK, SC, TN, TX, WI |
5,200 |
5,200 |
| 6 |
Mar. 1-3, 2023 |
SCS Outbreak |
AL, AR, GA, IN, KY, MS, OH, PA, TN, VA |
4,900 |
5,125 |
| 7 |
Mar. 12-16, 2024 |
SCS Outbreak |
AR, IL, IN, KS, KY, MO, MS, OH, OK, TX |
4,800 |
4,800 |
| 8 |
May 27-30, 2019 |
SCS Outbreak |
AR, CO, IA, IL, IN, KS, MO, NJ, NY, OH,
OK, PA, TX, WV, WY |
3,650 |
4,499 |
| 9 |
Mar. 31 - Apr. 1, 2023 |
Tornado Outbreak |
AL, AR, DE, GA, IL, IN, IO, KY, MI, NE,
OH, PA, TN, TX |
4,300 |
4,497 |
| 10 |
Jun. 21-26, 2023 |
SCS Outbreak |
CO, TX, Southeast |
4,250 |
4,397 |
(1) Defined by Aon as severe convective storms including insured thunderstorm events and may include tornado, hail, damaging straight-line winds (derechos) and flash flood impacts from events. Subject to change as loss estimates are further developed. As of January 2025.
(2) Adjusted for inflation by Aon using the U.S. Consumer Price Index.
Source: Aon. |
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