According to the National Weather Service, snow rollers sometimes called snow doughnuts need just the right combination of light, sticky snow, strong (but not too strong) winds and cold temperatures to form. It’s been about 10 years since snow rollers were reported in western Pennsylvania, but snow rollers appeared in near Spokane, Wash., in 2009.
WHERE ARE YOU FROM AND HAVE YOU SEEN THESE BEFORE?
Like a snowball spinning downhill in a cartoon, picking up size, snow rollers grow layer by layer as they’re rolled along by the wind. Sometimes they do roll downhill, but in this case, wind created the mysterious, hollow snow tubes. Pictures posted online show tracks in the snow left behind as the snow rollers swept across snowy yards and golf courses.
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