Weather theoryQuestion 347 of 934

What is the first stage of a thunderstorm?

  1. The mature stage
  2. The dissipating stage
  3. The cumulus stage
  4. The anvil stage
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Correct answer: The cumulus stage

Lifting action of the air begins in the cumulus stage.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 12: Weather Theory — Thunderstorms, page 306

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Questions last reviewed: 18 October 2026