Natural disasters

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Across
  1. 2. an overflow of water that 'submerges' land
  2. 6. a period of drier-than-normal conditions.
  3. 8. a depression or hole in the ground caused by some form of collapse of the surface layer
Down
  1. 1. a violent and dangerous rotating column of air that is in contact with both the surface of Earth and a cloud
  2. 3. the result of a sudden release of energy in the Earth's crust that creates seismic waves
  3. 4. large fires which often start in wildland areas
  4. 5. a series of waves in a water body caused by the displacement of a large volume of water
  5. 7. a rapid flow of snow down a slope, such as a hill or mountain