What do Towering Cumulus Clouds indicate?

Towering cumulus clouds are a clear indication of unstable atmospheric conditions. These clouds form when warm, moist air rises and cools, leading to increased vertical development. As the air continues to rise, it can result in the buildup of significant moisture which, under the right conditions, can ultimately lead to thunderstorms.

The presence of these clouds generally signals that there is enough instability in the atmosphere to support convective activity. This can be associated with increased wind currents and the potential for severe weather phenomena, including thunderstorms, heavy rainfall, and even severe turbulence in the vicinity of the clouds.

In contrast, the other options describe conditions that do not align with the characteristics of towering cumulus clouds. For instance, stable conditions with clear skies do not produce such vertical cloud formations, while high altitude weather changes or low humidity would not typically manifest as towering cumulus clouds.