Weather

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Across
  1. 6. It's extremely cold
  2. 7. A mass of snow, ice and rock coming down a mountain
  3. 9. A violent storm with strong winds
  4. 11. It's unpleasantly cold
Down
  1. 1. It's caused by pollution
  2. 2. It's quite cold
  3. 3. A loud noise you hear during a storm
  4. 4. A light wind
  5. 5. A light in the sky caused by electricity
  6. 8. A period of little or no rain
  7. 10. Everything is covered by water