FAA Ground School Practice Test

What weather condition is indicated by the presence of towering cumulus clouds?

1. Calm weather

2. Possible thunderstorms

3. Clear skies

4. Adverse fog conditions

The correct answer is: Possible thunderstorms

The presence of towering cumulus clouds typically indicates the potential for thunderstorms. These clouds are a stage in the development of convective weather, where rising warm, moist air leads to the formation of these tall, vertically-developed clouds. As this process continues, it can culminate in the development of cumulonimbus clouds, which are associated with thunderstorms, heavy rain, and extreme weather conditions. This transformation signifies the instability in the atmosphere, which is a key ingredient for thunderstorms to form. The towering nature of these clouds is a visual cue that significant vertical development is occurring, further reinforcing the likelihood of stormy weather.