Tsnowami Share definition Flag A Huge Ass Snow Storm that drops 20 in of snow or more in 2 hours or less. taken from the word Tsunami MN is getting hit with a Tsnowami right now, and people are nuts and still driving around Tsnowami by LilWitts March 6, 2011 0 0 Get merch Get the Tsnowami mug. Buy Now — $32.95 See more merch