thundersnow

Snow that comes out of nowhere when the weather is completely still, then disappears and the weather is still again.

Oh my god, this thundersnow came from nowhere.

by Rachel Stewart January 12, 2017

Thundersnow Traffuck

Traffic in the Washington DC Metro area caused by any amount of snow, specifically thundersnow

I spent 13 hours trapped on the GW parkway because of this thundersnow traffuck!

Thundersnow traffic caused 100s of cars to be abandoned by their owners this past week.

by BGernat January 28, 2011