Shelf cloud

From Glossary of Meteorology
(Redirected from Shelf clouds)

shelf cloud

A low-level, horizontal, wedge-shaped arcus cloud associated with a convective storm's gust front (or occasionally a cold front).

The shelf cloud is attached to the convective storm's cloud base. Rising motion can be seen in the leading (outer) part of the shelf cloud, while the underside appears turbulent and tattered.
Compare roll cloud.