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1.
A less powerful tornado, made of snow, with the same amount of force as a sand storm.
1) I'd prefer getting caught in a snownado over getting caught in a sand storm ANY day! Because snow getting in your eyes is basically like putting in eye drops, and sand, well, isn't.
2) I got caught in a snownado right over there. Luckily I made it to safety.
by Moutain Venturer February 15, 2007
 
2.
A snow tornado. Blizzard conditions with tornado warnings seemingly common in the Erie, PA area.
The weather terrorists are calling for a snow and a tornado, a snownado!
by presqueisle January 31, 2011
 
3.
When a male is ejaculating he spins the penis in a helicopter formation thus creating a snownado
Hey bro! I gave this slut a huge snownado last night!
by Snownadomaker April 22, 2013
 
4.
snow falling when wind gusts are above 35 mph causing swirly funnel clouds of white.
School is cancelled today due to snownadoes.

Snownadoes have greatly limited visibility on the interstate
by Steve Craig February 12, 2008
 
5.
When there's a big swril of snow, spinning around, like crazy, like a tornado
I got stuck in a snownado.
by Juicy Dubs December 30, 2012