weather

123456
Across
  1. 2. extremely cold
  2. 3. a mixture of smoke, fog, and chemical fumes
  3. 4. loud noise you hear from the sky after a flash of lightning
  4. 6. very warm
Down
  1. 1. a very heavy fall of snow
  2. 2. thick with fog
  3. 5. small balls of ice that fall like rain from the sky.