Published by Diana on 24 Jun 2009
You can’t make this stuff up
Snow rollers are a weird weather phenomenon that occurs only under perfect conditions. You have to have strong winds (but not too strong) and sticky snow (but not too sticky). They’re kind of a Goldilocks thing: everything has to be “just right.”
Check out this picture:

Snow Rollers, photo by Tim Tevebaugh
Further explanation can be found here: National Weather Service and Snow Rollers.