Arcus Cloud (25 Jun 25)

The motion and structure of the clouds is hypnotic.

An arcus cloud is a low, horizontal cloud formation associated with the leading edge of a thunderstorm's outflow, often appearing as a wedge-shaped or shelf-like cloud. It forms when cold air from the thunderstorm's downdraft pushes under warmer, moist air, causing the warm air to rise and condense into a cloud. Arcus clouds are typically seen with cumulonimbus clouds and can indicate strong winds or severe weather, such as gust fronts or squall lines. They are most common in warm, humid conditions and can stretch for miles across the sky. Visually, they often look dramatic, with a dark, ominous appearance due to the dense, turbulent air.