Weather crossword puzzle

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Across
  1. 6. Period of warmer weather where snow and ice begins to melt
  2. 7. Highest point
  3. 10. Movement of air
  4. 12. Degree of hotness or coldness
  5. 13. Sound caused by a flash of lightning
Down
  1. 1. A type of rain
  2. 2. Liquid water droplets
  3. 3. Small crystals of ice
  4. 4. A weather of strong wind and heavy rain
  5. 5. Solid part of Earth's surface
  6. 7. Clump of water vapor
  7. 8. Brief moment of weather
  8. 9. Energy transferred from one body to another
  9. 11. Amount of water vapor in the air