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  2. Snowmelt - Wikipedia

    en.wikipedia.org/wiki/Snowmelt

    As snow in Minnesota, North Dakota, and South Dakota begins to melt and flow into the Red River, the presence of downstream ice can act as a dam and force upstream water to rise. Colder temperatures downstream can also potentially lead to freezing of water as it flows north, thus augmenting the ice dam problem.

  3. Snow - Wikipedia

    en.wikipedia.org/wiki/Snow

    Ice dams on roofs form when accumulated snow on a sloping roof melts and flows down the roof, under the insulating blanket of snow, until it reaches below freezing temperature air, typically at the eaves. When the meltwater reaches the freezing air, ice accumulates, forming a dam, and snow that melts later cannot drain properly through the dam ...

  4. Classifications of snow - Wikipedia

    en.wikipedia.org/wiki/Classifications_of_snow

    Crust – A variety of processes can create a crust, a layer of snow on the surface of the snowpack that is stronger than the snow below, which may be powder snow. Crusts often result from partial melting of the snow surface by direct sunlight or warm air followed by re-freezing, but can also be created by wind or by surface water. [24]

  5. Why salt melts ice — and how to use it on your sidewalk - AOL

    www.aol.com/news/chemists-told-us-why-salt...

    Salt grains, used for melting ice and snow, seen on an icy sidewalk. ... “When you look at any frozen material, ice included, at temperatures slightly below the freezing point, there is a ...

  6. Snowflake - Wikipedia

    en.wikipedia.org/wiki/Snowflake

    A snowflake is a single ice crystal that is large enough to fall through the Earth's atmosphere as snow. [ 1 ] [ 2 ] [ 3 ] Snow appears white in color despite being made of clear ice. This is because the many small crystal facets of the snowflakes scatter the sunlight between them.

  7. Thaw (weather) - Wikipedia

    en.wikipedia.org/wiki/Thaw_(weather)

    Thaw is the period when the snow and ice melt, at the end of the winter, in cold climates. January thaw ... since temperatures will remain below freezing.

  8. What is graupel? How it is different from sleet or hail? - AOL

    www.aol.com/weather/difference-between-freezing...

    It is possible for snow to fall when temperatures are above 32, as long as the layer of above-freezing air near the surface is rather shallow, not allowing the snowflakes to melt.

  9. Snow science - Wikipedia

    en.wikipedia.org/wiki/Snow_science

    Vertical fingers of frozen drained water. A basal crust resurgent from melt water ponding above a substrate and freezes. A glaze of ice on the snow surface, resulting from freezing rain on snow. A sun crust from melt water at the surface snow refreezes at the surface due to radiative cooling.