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1
Snow rollers.  Rare January 27, 2014
Snow rollers. Rare January 27, 2014
::2014/01/27::
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2
Snow Roller 8k+
Snow Roller 8k+
::2010/05/11::
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3
Winter Fun with Swendson Snow Roller
Winter Fun with Swendson Snow Roller
::2012/12/01::
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4
Snow Roller
Snow Roller
::2011/04/17::
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5
Nordic Ski Trail Grooming with Snow Roller
Nordic Ski Trail Grooming with Snow Roller
::2012/03/08::
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6
Patagonia Black Hole Snow Roller 190CM
Patagonia Black Hole Snow Roller 190CM
::2013/08/26::
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7
Patagonia Black Hole Snow Roller 167CM
Patagonia Black Hole Snow Roller 167CM
::2013/08/26::
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8
Sällskapsresan 2 - Snowroller
Sällskapsresan 2 - Snowroller
::2008/03/21::
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9
Snow Roller, Adirondacks
Snow Roller, Adirondacks
::2010/01/08::
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10
Miniature Horse Snow Roller
Miniature Horse Snow Roller
::2014/01/03::
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11
Snow Roller
Snow Roller
::2007/12/14::
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12
(OmU) Patagonia Black Hole Snow Roller 167CM - deutsche Version
(OmU) Patagonia Black Hole Snow Roller 167CM - deutsche Version
::2013/11/19::
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13
(OmU) Patagonia Black Hole Snow Roller 190CM - deutsche Version
(OmU) Patagonia Black Hole Snow Roller 190CM - deutsche Version
::2013/11/19::
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14
Snow Roller
Snow Roller
::2014/01/29::
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15
Snow roller Phenomenon During Polar Vortex
Snow roller Phenomenon During Polar Vortex
::2014/01/27::
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16
Neopets- The Worst Snow Roller Player In The WORLD (LITERALLY!)
Neopets- The Worst Snow Roller Player In The WORLD (LITERALLY!)
::2013/08/11::
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17
Snow Roller Reactions
Snow Roller Reactions
::2014/01/28::
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18
Snow Roller Forming
Snow Roller Forming
::2014/02/18::
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19
snow roller being pulled by horses
snow roller being pulled by horses
::2014/02/24::
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20
deck rider chute skate ski snow roller
deck rider chute skate ski snow roller
::2007/05/18::
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21
Snow Roller Mayhem with Gwen and Saphira
Snow Roller Mayhem with Gwen and Saphira
::2014/02/22::
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22
Snow roller
Snow roller
::2013/02/07::
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23
Event : Snow Roller and Boss NooNoo
Event : Snow Roller and Boss NooNoo
::2007/12/31::
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24
Snow roller
Snow roller
::2014/01/30::
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25
Darwin the Cavachon - Snow Roller
Darwin the Cavachon - Snow Roller
::2013/03/12::
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26
Snow Roller Balls in Red Pine.mov
Snow Roller Balls in Red Pine.mov
::2010/12/13::
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27
Snow roller
Snow roller
::2012/11/09::
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28
Bulldog snow roller
Bulldog snow roller
::2013/02/27::
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29
Ally G Daredevil Snow Roller
Ally G Daredevil Snow Roller
::2010/01/02::
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30
compil skate snow roller lav
compil skate snow roller lav
::2006/06/07::
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31
Let
Let's Play Sonic The Hedghog 4 Episode II Part 2: Snow, Roller Coasters, and Rockets!
::2012/06/12::
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32
Snow Roller!!
Snow Roller!!
::2008/12/15::
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33
Snow Roller
Snow Roller
::2008/04/28::
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34
snow roller
snow roller
::2011/03/11::
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35
BUBBA SNOW ROLLER
BUBBA SNOW ROLLER
::2011/01/08::
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36
Snow Roller
Snow Roller
::2007/02/15::
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37
Stacia Plays Snow Roller - HIGH SCORE
Stacia Plays Snow Roller - HIGH SCORE
::2013/03/29::
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38
Snow Roller
Snow Roller
::2011/02/06::
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39
Husky Mix, Timber--Snow Roller
Husky Mix, Timber--Snow Roller
::2011/02/17::
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40
Snow Roller
Snow Roller
::2013/03/04::
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41
Nuked Radio #89 Early2it: Sea Foam, Snow Rollers, and Geological Uptick EXPLAINED
Nuked Radio #89 Early2it: Sea Foam, Snow Rollers, and Geological Uptick EXPLAINED
::2013/02/01::
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42
Silversoft trying to play Snow Roller on www.neopets.com
Silversoft trying to play Snow Roller on www.neopets.com
::2012/02/19::
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43
Robin Maurer Rex RS 500 roller driving snow germany winter 2012 drifting
Robin Maurer Rex RS 500 roller driving snow germany winter 2012 drifting
::2012/02/14::
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44
Figure skating off ice.Roller-Snow white (фигурное катание на роликах)
Figure skating off ice.Roller-Snow white (фигурное катание на роликах)
::2011/01/15::
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45
Quarter Guy on Roller Blades in the Snow
Quarter Guy on Roller Blades in the Snow
::2013/01/27::
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46
Roller Snow Compactor
Roller Snow Compactor
::2007/11/30::
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47
High Roller Snow Action
High Roller Snow Action
::2011/01/19::
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48
Humor U, BYU Stand-up Comedy - "Bambi" and "Roller Coasters" - Jefferson Snow
Humor U, BYU Stand-up Comedy - "Bambi" and "Roller Coasters" - Jefferson Snow
::2012/12/05::
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49
Zoe vs the snow rollers
Zoe vs the snow rollers
::2014/01/29::
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50
Losi High Roller 1/10 in snow
Losi High Roller 1/10 in snow
::2011/01/01::
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From Wikipedia, the free encyclopedia
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A snow roller in Cincinnati, Ohio, USA.

A snow roller is a rare meteorological phenomenon in which large snowballs are formed naturally as chunks of snow are blown along the ground by wind, picking up material along the way, in much the same way that the large snowballs used in snowmen are made.

Unlike snowballs made by people, snow rollers are typically cylindrical in shape, and are often hollow since the inner layers, which are the first layers to form, are weak and thin compared to the outer layers and can easily be blown away, leaving what looks like a doughnut or Swiss roll. Snow rollers have been seen to grow as large as two feet in diameter.

The following conditions are needed for snow rollers to form:

  • There must be a relatively thin surface layer of wet, loose snow, with a temperature near the melting point of ice
  • Under this thin layer of wet snow there must be a substrate to which the thin surface layer of wet snow will not stick, such as ice or powder snow
  • The wind must be strong enough to move the snow rollers, but not strong enough to blow them apart.
  • Alternatively, gravity can move the snow rollers as when a snowball, such as those that will fall from a tree or cliff, lands on a steep hill and begins to roll down the hill.

Because of this last condition, snow rollers are more common in hilly areas. However, the precise nature of the conditions required makes them a very rare phenomenon.

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