From "Disasters By Design: A Reassessment Of Natural Hazards In The United States" During the 1975-1994 study period: • Eighty percent of all natural hazards were climatological, including droughts and dust storms, extreme cold, floods, fog, hail, heat, hurricanes and tropical storms, ice, sleet, snow, lightning, snow avalanches, tornadoes, wind and Å·ÃÀ¿Ú±¬ÊÓƵ. • Ten percent of natural hazards were due to geophysical hazards, including earthquakes, landslides, tsunamis and volcanoes. • Only 17 percent of natural hazards losses were insured.