Wall cloud

Wall clouds with lightning and rain

Wall clouds (or pedestal clouds) are localized, large and persistent lowering cloud formations that develop below the rain-free region of thunderstorms. Rotating wall clouds are indicative of mesocyclones in thunderstorms. Wall clouds do not always rotate, though.^[1]

Wall clouds are formed by a process known as entrainment, when an inflow of warm, moist air rises and overpowers rain-cooled air during a downwind downdraft.

Wall Cloud Media

Rotating wall cloud in Oklahoma
A wall cloud with tail cloud.
A shelf cloud over Enschede, Netherlands
Classic supercell thunderstorm
A tornadic wall cloud with RFD clear slot.

References

↑ "Higgins Storm Chasing | What are Wall Clouds?". Archived from the original on 2021-11-27. Retrieved 2022-03-27.

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[1] "Higgins Storm Chasing | What are Wall Clouds?". Archived from the original on 2021-11-27. Retrieved 2022-03-27.

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