<p>A strong winter storm blew through northern Colorado, dropping more than a foot of snow in some cities through the Rocky Mountains on December 25. This video was taken from Silverthorne, which received around 20 inches of snow</a> in 72 hours.</p><p>According to Denver-based KUSA</a>, Interstate 70 through Silverthorne was closed for several hours due to treacherous driving conditions. Workers were monitoring the area for avalanches and high-profile vehicles were required to have tire chains. Credit: Instagram/jvczech27 via Storyful</p><br />
