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2024 Hennepin County All -Jurisdiction Hazard Mitigation Plan <br />Volume 2 — Hazard Inventory <br />Greatest pressure drop. <br />• United States <br />o 100 milibars (Manchester, SD, June 24, 2003). *An unofficial drop of 194 millibars <br />was noted from the Tulia, TX tornado on April 21, 2007. <br />Costliest tornado <br />• United States <br />o $2.9 billion (Joplin, MO, May 22, 2011) <br />Deadliest tornado <br />• United States <br />o 695 killed (Tri-State Tornado, March 18, 1925) <br />Deadliest modern-day tornado <br />• United States <br />o 158 killed (Joplin, MO, May 22, 2011) <br />Deadliest tornado outbreak <br />• United States <br />o 747 killed (Tri-State Outbreak, March 18, 1925) <br />Deadliest modern-day outbreak <br />• United States <br />o 324 killed (SE US Outbreak, April 25-28, 2011) <br />4.3.2.3. Spectrum of Consequences B2b <br />The consequences from tornadoes can range from minor damage and injuries to complete destruction <br />and death. Please see the chart below (TABLE 4.3.2B) that correlates the EF rating scale with the expected <br />damage seen. <br />71 <br />