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Which of the following statements is correct concerning the weather in a warm sector?
  • A
    No thunderstorms can occur
  • B
    Isolated thunderstorms are sometimes possible over continental areas during the summer
  • C
    In mid- and high latitudes thunderstorms may occur only over open sea during the summer
  • D
    Isolated air mass thunderstorms are common during all seasons over continental areas

The air within the warm sector is generally stable (Tropical Maritime). Nevertheless, it could become unstable during summer - where possible Air mass Thunderstorms may form.

Air mass thunderstorms are isolated thunderstorms produced by local convection within a conditionally unstable air mass. Often form in the afternoon when there is maximum heating at the surface. Rarely reach severe criteria.

  • The lifting mechanism for these thunderstorms is not a frontal boundary but rising thermals off the hot surface.
  • Usually found in the warm sector and in the tropics.

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