powder avalanche

powder avalanche

[¦pau̇d·ər ¦av·ə‚lanch]
(geology)
Loose powder snow rapidly descending a mountainside.
References in periodicals archive ?
Whether a person survives a dry powder avalanche could thus depend on whether he or she gets hit with a fast-moving or slow-moving part of the slide.
To peer even more closely into avalanches, the SLF team uses a high-resolution radar probe that penetrates the obscuring clouds of a powder avalanche at Sionne.
The powder avalanche is the largest and most destructive type.
While you might not care that much while a wall of snow is rushing towards you, if you survive, you might like to know whether you were hit by a powder avalanche, a wet snow avalanche or a slab avalanche.
Though their progress is much slower than a powder avalanche, the denser nature of the snow within the slide makes them extremely destructive.