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malformalady:

Snow rollers are formed when the wind blows wet snow into a roll. Three weather conditions must occur simultaneously and in the proper order for snow rollers to take shape. First, there has to be sufficient accumulation of light, fluffy snow. Secondly, once the snow has stopped falling, the temperature has to rise above the freezing mark, making the snow sticky. Finally, a strong wind is required to roll the snow up in layers. If the wind is strong enough, the moving ball of snow becomes cylindrical, often with a hole through it lengthwise.

Reblogged 8 months ago from grejor (Originally from malformalady)
32,089 notes
Tagged: snow, nature, .
Source: malformalady
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