NATURAL DISASTERnat·u·ral dis·as·ter NOUN a natural event such as a flood, earthquake, or hurricane that causes great damage or loss of life: Select a link below for more information. Floods- St. Louis District, U.S. Army Corps of Engineers- River and Reservoir Report Winter Storms Tornadoes Severe Thunderstorms / High Winds Severe and Excessive Heat or Cold Earthquakes