1. Alabama
> Natural disaster: Deep South Tornado Outbreak
> Date: March 21, 1932
> Fatalities: 286
> Other event considered: Tornado outbreak-1932
2. Alaska
> Natural disaster: Good Friday Earthquake
> Date: March 27, 1964
> Fatalities: 139
> Other event considered: Chilkoot Trail “Palm Sunday” Avalanche-1898
3. Arizona
> Natural disaster: Tropical Storm Norma
> Date: Sept. 4-5, 1970
> Fatalities: 23
> Other event considered: Yarnell Hill Fire-2013
4. Arkansas
> Natural disaster: Mississippi River Flood
> Date: May-August 1927
> Fatalities: 127
> Other event considered: Albert Pike Flash Floods-2010
5. California
> Natural disaster: San Francisco Earthquake
> Date: April 18, 1906
> Fatalities: 3,000
> Other event considered: Los Angeles Flood-1938