Natural phenomenon

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Across
  1. 5. Large wave
  2. 6. Spews from a volcano
  3. 8. Large storm on land
  4. 10. Fighter jet
  5. 11. Good for skating!
  6. 12. Etna for example
Down
  1. 1. Land shudder
  2. 2. Vortex of the sea
  3. 3. Cold lava!
  4. 4. Ice spheres from the sky
  5. 7. Flakes of water, each unique
  6. 9. Precipitation