What is indicated by the term "Embedded Thunderstorm"?

The term "Embedded Thunderstorm" refers to thunderstorms that are obscured by massive cloud layers, making them difficult or impossible to detect visually. These thunderstorms are typically found within larger cloud systems, such as stratiform clouds, that can obscure the intense convective activity associated with them.

When pilots encounter embedded thunderstorms, they are often relying on radar or other instruments to detect them, as the visual cues are hidden by the surrounding cloud cover. This scenario creates a significant hazard for aviation as it can lead to unexpected turbulence, lightning, and other severe weather phenomena that are typically associated with thunderstorms. Recognizing that embedded thunderstorms exist is essential for safe navigation and flight planning, as they pose a risk even when they are not clearly visible.

The other options do not accurately represent the characteristics or implications of embedded thunderstorms, as they focus on visibility or the conditions which do not capture the essence of being "embedded" within larger cloud formations.