Natural disasters

3. A tropical cyclone occurring in the western Pacific or Indian oceans.
5. A very heavy snowstorm with high winds.
8. A fall or slide of a large mass, as of snow or rock, down a mountainside.
9. A natural depression in a land surface communicating with a subterranean passage, generally occurring in limestone regions and formed by solution or by collapse of a cavern roof.
11. A transient, sometimes violent storm of thunder and lightning, often accompanied by rain and sometimes hail.
12. wave A period of very hot weather.
13. A rotating column of air ranging in width from a few yards to more than a mile and whirling at destructively high speeds, usually accompanied by a funnel-shaped downward extension of a cumulonimbus cloud.
15. A raging, rapidly spreading fire.

1. An opening in the earth's crust through which molten lava, ash, and gases are ejected.
2. A storm with hail.
4. A violent rotating windstorm.
6. A long period of abnormally low rainfall, especially one that adversely affects growing or living conditions.
7. A sudden movement of the earth's crust caused by the release of stress accumulated along geologic faults or by volcanic activity. Also called seism, temblor.
10. A very large ocean wave caused by an underwater earthquake or volcanic eruption.
14. An overflowing of water onto land that is normally dry.