As one of the largest countries in the world, the United States is also one of the most geographically diverse — from deserts to forests to miles of coast line. While this comes with many advantages, this unfortunately leaves the country vulnerable to all kinds of natural disasters.
Different parts of the United States face different types of natural disasters. Midwestern areas near rivers are often inundated with massive floods. The West Coast is at risk of wildfires, earthquakes, and even volcanic eruptions. The Southern part of the country is frequently hit with tornadoes, and the East Coast faces the threat of devastating hurricanes every year. These natural disasters not only destroy property and present serious problems to the economy, but also claim hundreds of lives every year.
American weather continues to become more volatile. In 2018, there were 14 weather events that each caused over $1 billion in damage. And in many parts of the country, these weather events could become even more destructive because of climate change.
24/7 Wall St. reviewed government sources on the weather event in each state’s history that caused the highest number of fatalities to determine the worst natural disaster in every state.
Thanks to their geography and location, some states have not faced any mass-casualty weather events. Many other parts of the country have been less fortunate, experiencing massive storms and floods that have claimed the lives of hundreds or even thousands of Americans. Many such events, like the 1900 hurricane that hit Galveston, Texas killed so many people that getting an accurate final death toll was virtually impossible, especially during that era.
Click here to see the worst natural disaster in every state
Click here to see our methodology
1. Alabama
> Natural disaster: Deep South Tornado Outbreak
> Date: March 21, 1932
> Fatalities: 286
> Other event considered: Tornado outbreak-1932
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2. Alaska
> Natural disaster: Good Friday Earthquake
> Date: March 27, 1964
> Fatalities: 139
> Other event considered: Chilkoot Trail “Palm Sunday” Avalanche-1898
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3. Arizona
> Natural disaster: Tropical Storm Norma
> Date: Sept. 4-5, 1970
> Fatalities: 23
> Other event considered: Yarnell Hill Fire-2013
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4. Arkansas
> Natural disaster: Mississippi River Flood
> Date: May-August 1927
> Fatalities: 127
> Other event considered: Albert Pike Flash Floods-2010
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5. California
> Natural disaster: San Francisco Earthquake
> Date: April 18, 1906
> Fatalities: 3,000
> Other event considered: Los Angeles Flood-1938
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6. Colorado
> Natural disaster: Big Thompson Canyon Flood
> Date: July 31, 1976
> Fatalities: 144
> Other event considered: Denver Flood-1965
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7. Connecticut
> Natural disaster: Great New England Hurricane
> Date: Sept. 21, 1938
> Fatalities: 85
> Other event considered: Great Flood-1955
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8. Delaware
> Natural disaster: Gale of ’78
> Date: Oct. 23, 1878
> Fatalities: 100
> Other event considered: Mid-Atlantic Flood-2006
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9. Florida
> Natural disaster: Lake Okeechobee Hurricane
> Date: Sept. 6-20, 1928
> Fatalities: 2,500-3,000
> Other event considered: Labor Day Hurricane-1935
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10. Georgia
> Natural disaster: Sea Islands Hurricane
> Date: Aug. 15, 1893
> Fatalities: 2,000+
> Other event considered: Atlanta Flood-2009
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11. Hawaii
> Natural disaster: Aleutian Islands Earthquake/Tsunami
> Date: April 1,1946
> Fatalities: 159
> Other event considered: Hurricane Iniki-1992
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12. Idaho
> Natural disaster: The Big Burn of 1910
> Date: Aug. 20-21, 1910
> Fatalities: 87
> Other event considered: Borah Earthquake-1983
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13. Illinois
> Natural disaster: Chicago Heat Wave
> Date: July 13-15, 1995
> Fatalities: 750
> Other event considered: Tri-State Tornadoes-1925
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14. Indiana
> Natural disaster: The Great Flood of 1913
> Date: March 1913
> Fatalities: 100
> Other event considered: Tri-State Tornadoes-1925
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15. Iowa
> Natural disaster: The Armistice Day Blizzard
> Date: Nov. 11, 1940
> Fatalities: 154
> Other event considered: Great Flood-1993
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16. Kansas
> Natural disaster: Great Plains Tornado Outbreak
> Date: May 25-26, 1955
> Fatalities: 80
> Other event considered: Great Flood-1951
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17. Kentucky
> Natural disaster: Louisville Cyclone
> Date: March 27, 1890
> Fatalities: 100
> Other event considered: Ice and snow storm-2009
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18. Louisiana
> Natural disaster: Hurricane Katrina
> Date: Aug. 23-31, 2005
> Fatalities: 1,577
> Other event considered: Cheniere Caminada Hurricane-1893
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19. Maine
> Natural disaster: Ice Storm of ’98
> Date: Jan. 4, 1998
> Fatalities: 8
> Other event considered: Great Flood-1987
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20. Maryland
> Natural disaster: Pan American jet hit by lightning
> Date: Dec. 8, 1963
> Fatalities: 81
> Other event considered: Rain storm and flood-1971
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21. Massachusetts
> Natural disaster: Worcester Tornado
> Date: June 9, 1953
> Fatalities: 90
> Other event considered: Great New England Hurricane-1938
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22. Michigan
> Natural disaster: Great Michigan Fire
> Date: Sept. 5, 1881
> Fatalities: 282
> Other event considered: Flint tornadoes-1953
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23. Minnesota
> Natural disaster: Cloquet Fire
> Date: Oct. 12, 1918
> Fatalities: 450
> Other event considered: Twin Cities Tornadoes-1965
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24. Mississippi
> Natural disaster: Hurricane Katrina
> Date: Aug. 23-31, 2005
> Fatalities: 238
> Other event considered: Mississippi River Flood-1927
See all stories featuring: Mississippi
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25. Missouri
> Natural disaster: Joplin Tornado
> Date: May 22, 2011
> Fatalities: 158
> Other event considered: Great Flood-1951
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26. Montana
> Natural disaster: The Big Burn of 1910
> Date: Aug. 20-21, 1910
> Fatalities: 87
> Other event considered: Flood-1964
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27. Nebraska
> Natural disaster: Schoolhouse Blizzard
> Date: Jan. 12, 1888
> Fatalities: 100
> Other event considered: Blizzard-1949
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28. Nevada
> Natural disaster: Heat wave
> Date: July 14-23, 2005
> Fatalities: 17
> Other event considered: Flash flood-1974
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29. New Hampshire
> Natural disaster: Great New England Hurricane
> Date: Sept. 21, 1938
> Fatalities: 13
> Other event considered: Heat wave-1911
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30. New Jersey
> Natural disaster: Superstorm Sandy
> Date: Oct. 29, 2012
> Fatalities: 43
> Other event considered: Hurricane Connie-1955
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31. New Mexico
> Natural disaster: Blizzard
> Date: Dec. 14, 1967
> Fatalities: 51
> Other event considered: Cero Grande Fire-2000
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32. New York
> Natural disaster: Great Blizzard of 1888
> Date: March 12-14, 1888
> Fatalities: 200
> Other event considered: Superstorm Sandy-2012
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33. North Carolina
> Natural disaster: Hurricane Floyd
> Date: Sept. 16, 1999
> Fatalities: 26
> Other event considered: Hurricane Hazel-1954
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34. North Dakota
> Natural disaster: Schoolhouse Blizzard
> Date: Jan. 12, 1888
> Fatalities: 235
> Other event considered: Red River Flood-1997
See all stories featuring: North Dakota
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35. Ohio
> Natural disaster: Great Ohio Flood
> Date: March 23-27, 1913
> Fatalities: 467
> Other event considered: Ohio River Flood-1937
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36. Oklahoma
> Natural disaster: Glazier-Higgins-Woodward tornadoes
> Date: April 9, 1947
> Fatalities: 113
> Other event considered: Tornado outbreak-1999
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37. Oregon
> Natural disaster: Heppner Flash Flood
> Date: June 2, 1903
> Fatalities: 247
> Other event considered: Vanport Flood-1948
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38. Pennsylvania
> Natural disaster: Johnstown Flood
> Date: May 31, 1889
> Fatalities: 2,209
> Other event considered: Flood-1996
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39. Rhode Island
> Natural disaster: Great New England Hurricane
> Date: Sept. 21, 1938
> Fatalities: 100
> Other event considered: Great Gale-1815
See all stories featuring: Rhode Island
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40. South Carolina
> Natural disaster: Sea Islands Hurricane
> Date: Aug. 15, 1893
> Fatalities: 2,000+
> Other event considered: Charleston Earthquake-1886
See all stories featuring: South Carolina
41. South Dakota
> Natural disaster: Black Hills Flood
> Date: June 9-10, 1972
> Fatalities: 238
> Other event considered: Schoolhouse Blizzard-1888
See all stories featuring: South Dakota
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42. Tennessee
> Natural disaster: Southern United States Tornado Outbreak
> Date: March 21-22, 1952
> Fatalities: 67
> Other event considered: Nashville Tornado-1933
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43. Texas
> Natural disaster: Galveston Hurricane
> Date: Sept. 8, 1900
> Fatalities: 8,000
> Other event considered: Brazos River Flood-1899
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44. Utah
> Natural disaster: Bingham Canyon Avalanche
> Date: Feb. 17, 1926
> Fatalities: 36
> Other event considered: Flash flood-2015
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45. Vermont
> Natural disaster: Great Vermont Flood
> Date: Nov. 2-4, 1927
> Fatalities: 84
> Other event considered: Great New England Hurricane-1938
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46. Virginia
> Natural disaster: Hurricane Camille
> Date: Aug. 19, 1969
> Fatalities: 153
> Other event considered: Hurricane Isabel-2003
See all stories featuring: Virginia
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47. Washington
> Natural disaster: Wellington Avalanche
> Date: March 1, 1910
> Fatalities: 96
> Other event considered: Mount St. Helens Eruption-1980
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48. West Virginia
> Natural disaster: Great Appalachian Storm
> Date: Nov. 24-30, 1950
> Fatalities: 160
> Other event considered: Tornado outbreak-1944
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49. Wisconsin
> Natural disaster: Peshtigo Fire
> Date: Oct. 8, 1871
> Fatalities: 1,500-2,500
> Other event considered: Barneveld tornadoes-1984
See all stories featuring: Wisconsin
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50. Wyoming
> Natural disaster: Blackwater Fire
> Date: Aug. 18, 1937
> Fatalities: 15
> Other event considered: Gros Ventre landslide-1925
See all stories featuring: Wyoming
Methodology
24/7 Wall St. reviewed natural disasters in each state and determined the worst event by the number of fatalities. For this list we considered disasters caused by a naturally occurring event — tornadoes, hurricanes, earthquakes, blizzards, floods, ice storms, heat waves, avalanches, and volcanic eruptions. 24/7 Wall St. used government sources such as the National Weather Service Weather Forecast Office, The National Oceanic and Atmospheric Administration, and the United States Geological Survey as well as media reports about these events to create the list of the worst natural disaster in every state.
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