What is a significant characteristic of advection thunderstorms over water?

Advection thunderstorms over water are characterized by clouds that are close together due to the processes that generate them. These thunderstorms typically form when warm, moist air moves over cooler water, creating a condition where the air can become unstable and rise, leading to the development of organized cloud formations and precipitation. The proximity of the clouds is a result of the moisture-laden air being cooled by the water surface, which promotes the formation of these clustered, often intense clouds.

In contrast, the other characteristics mentioned do not specifically apply to advection thunderstorms over water. For example, the time of day when thunderstorms occur can vary widely and is not limited to the afternoon. Additionally, the flow direction is dependent on the specific atmospheric conditions and not strictly northerly. The uneven heating of land is more associated with land-based thunderstorms, where variations in surface temperature lead to convection and thunderstorm development. Advection thunderstorms primarily relate to the movement of air over water and the resulting weather conditions.