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Top 10 Costliest U.S. Catastrophes Involving Tornadoes (1)

($ millions)

      Estimated insured loss (2)
Rank Date Location Dollars when occurred In 2016 dollars (3)
1 Apr. 22-28, 2011 AL, AR, GA, IL, KY, LA, MO, MS, OH, OK, TN, TX, VA $7,300 $7,875
2 May 20-27, 2011 AR, GA, IA, IL, IN, KS, KY, MI, MN, MO, NC, NE, NY, OH, OK, PA, TN, TX, VA, WI 6,900 7,443
3 May 2-11, 2003 AL, AR, CO, GA, IA, IL, IN, KS, KY, MO, MS, NC, NE, OH, OK, SC, SD, TN 3,205 4,118
4 Oct. 4-6, 2010 AZ 2,700 2,973
5 Apr. 6-12, 2001 AR, CO, IA, IL, IN, KS, KY, MI, MN, MO, NE, OH, OK, PA, TX, WI 2,200 2,927
6 Mar. 2-3, 2012 AL, GA, IN, KY, OH, TN 2,500 2,648
7 Apr. 28-29, 2012 IL, IN, KY, MO, TX 2,500 2,648
8 May 12-16, 2010 IL, MD, OK, PA, TX 2,000 2,202
9 Apr. 27-May 3, 2002 AR, GA, IL, IN, KS, KY, MD, MO, MS, NC, NY, OH, PA, TN, TX, VA, WV 1,675 2,195
10 Apr. 13-15, 2006 IA, IL, IN, WI 1,850 2,175
(1) Based on data through May 30, 2017. (2) Property coverage only. In addition to losses due to tornadoes themselves, amounts may include losses due to hail, wind and flooding during the same event. (3) Adjusted for inflation through 2016 by ISO using the GDP implicit price deflator. Source: The Property Claim Services® (PCS®) unit of ISO®, a Verisk Analytics® company.