Rain crust

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Rain crust is a type of snow crust formed by refreezing after surface snow crystals have been melted and wetted by liquid precipitation.
Rain crust is a type of snow crust formed by refreezing after surface snow crystals have been melted and wetted by liquid precipitation.

Rain crust is a type of snow crust formed by refreezing after surface snow crystals have been melted and wetted by liquid precipitation.

This type of crust is composed of individual ice particles such as firn. Rain may also help to form film crust or ice crust.

Rain crusts tend to be much more smooth and slippery than sun crusts and instabilities associated with them tend to last much longer, typically several days after a storm and sometimes through several storms.

Also unlike sun crusts, rain crusts form uniformly on all aspects but rain crusts--like rain--is highly elevation dependent. Typically rain falls at lower elevations and as you ascend through the freezing level the rain progressively turns to snow.


[edit] Also See

[edit] Reference

  1. Glossary of Meteorology Rain crust [[1]]
  2. National Avalanche Center and The Friends of the Utah Avalanche Forecast Center. Sun crest [2]
  3. Glossary of Meteorology Snow Crest [3]



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