Video of shelf clouds in India goes viral, what is the rare weather phenomenatext_fields
Haridwar: A video showing the formation of shelf clouds in Uttarakhand's Haridwar has gone viral on social media. It has led to significant interest and curiosity among people.
The footage, shared by a user named Anindya Singh, depicts the imposing appearance of these clouds. NDTV reported that it is challenging to verify the video’s authenticity because such videos often surface during periods of severe rainfall.
Shelf clouds, also known as Arcus clouds, are weather phenomena that are commonly associated with powerful storm systems, often mistaken for wall clouds, funnel clouds, or rotation. These unique cloud formations are frequently observed beneath cumulonimbus clouds, which are dense, towering vertical clouds responsible for intense rainfall.
The formation of shelf clouds occurs when a cold downdraft from a cumulonimbus cloud reaches the ground, leading to the rapid spread of cold air along the surface. This cold air displaces the existing warm, moist air, forcing it to rise. As the warm air ascends, the water vapor contained within it condenses, resulting in distinct patterns associated with shelf clouds. In certain instances, the presence of varying wind directions above and below the cloud can cause the formation to take on a rolling appearance.
Heavy rainfall continued to affect northern India when the video surfaced. Red alerts have been issued in Uttarakhand due to anticipated extreme rainfall.