Avalanche Cold wave Earthquake Aftershock Floods Flash flood Dam collapse Volcanic eruption Glowing avalanche Heat wave High wind cyclone Storm Hail Sand storm Storm surges Thunder storm Tropical storm Tornado Insect infestation Landslide Earth flow Power shortage Tsunami and tidal wave | Epidemics Drought Desertification Famine Food shortage or crop failure | Structural collapse Building collapse Mine collapse or cave-in Air disaster Land disaster Sea disaster Industrial/technological accident Explosions Chemical explosions Nuclear explosion or thermonuclear explosions Mine explosions Pollution Acid rain Chemical pollution Atmosphere pollution Chlorofluoro-carbons (CFCs) Oil pollution Fires Forest/grassland fire | National (civil strife, civil war) International (war-like encounters) Displaced population Displaced persons Refugees
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