cornice

From Glossary of Meteorology
An overhanging structure of ice or snow formed at a topographic edge (such as a mountain ridge) by wind-driven deposition.

Cornices can be extremely hazardous to mountain climbers. Cornice release can also initiate avalanches.

  1. (Sometimes called wedge.) In meteorology, an elongated area of relatively high atmospheric pressure, almost always associated with and most clearly identified as an area of maximum anticyclonic curvature of wind flow.

An overhanging structure of ice or snow formed at a topographic edge (such as a mountain ridge) by wind-driven deposition.

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