"Manmade disaster." Any industrial, nuclear or transportation accident, explosion, conflagration, power failure, natural resource shortage or other condition, except enemy action, resulting from manmade causes, such as oil spills and other injurious environmental contamination, which threatens or causes substantial damage to property, human suffering, hardship or loss of life.
"Natural disaster." Any hurricane, tornado, storm, flood, high water, wind-driven water, tidal wave, earthquake, landslide, mudslide, snowstorm, drought, fire, explosion or other catastrophe which results in substantial damage to property, hardship, suffering or possible loss of life.
"War-caused disaster." Any condition following an attack upon the United States resulting in substantial damage to property or injury to persons in the United States caused by use of bombs, missiles, shellfire, nuclear, radiological, chemical or biological means, or other weapons or overt paramilitary actions, or other conditions such as sabotage.
18 Pa.C.S. § 3903