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What do you know about the correctness of the following statements?

1. Prefrontal thunderstorms can occur ahead of cold fronts
2. A warm front passing a mountain range may become a front Aloft

  • A
    1 and 2 are correct
  • B
    1 is correct, 2 is not correct
  • C
    1 is not correct, 2 is correct
  • D
    1 and 2 are not correct
"1 Prefrontal thunderstorms can occur ahead of cold fronts" CORRECT
  • Thunderstorms can be triggered by a cold front that moves into moist, unstable air. Thunderstorms are typically found in the warm air mass ahead of and along the surface front. Sometimes squall lines develop in the warm air mass tens to hundreds of kilometres ahead of a cold front.
"2 A warm front passing a mountain range may become a front Aloft" CORRECT
  • Orographic uplifting may cause the warm front to rise up the slope of the mountain range. Warm air is less dense than cold air, for that reason, it is possible that the warm front won't come to the ground, remaining at the height of the mountain.

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