1906 – San Francisco Earthquake Fire
1910 – The Big Burn (of Idaho and Montana)
1918 – Spanish Flu Pandemic
1925 – Tri-State (Missouri, Illinois, and Indiana) Tornado
1938 – The New England Hurricane
1964 – The Great Alaskan Earthquake
1974 – Super Tornado Outbreak (13 states in USA)
1980 – Mount St. Helen Eruption
1993 – Storm of the Century (eastern US)
2005 – Hurricane Katrina (with largest damage in New Orleans, Louisiana)

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