meteorologists chris tomer explains the recipe for an avalanche has to do with know layers and the recent storms. >> they're of different temperatures. the snow consistency is different. one might have heavy snow and the next one might be lighter. so the bonding of the layers is different. each storm puts different pressure on the snowpack. >> the colorado department of transportation says this highway here that was shut down after an avalanche covered it. they tweeted this has never happened. >> we have had epic amount of snowfall in the mountainous regions of colorado. >> earlier this week, a family of three was caught in this avalanche that came down on to interstate 70. miraculously they were all okay. what a shock to them. there's more snow on the way. harris, cdot is asking folks as