In ND (sometimes -25F with -50F wind chills), I keep an GI Arctic parka, set of heavy thermals, expedition weight wool socks, insulated boots, insulated shell pants, fleece balaclava, ski/snowmobile gloves, sleeping bag, and some handwarmers.
That said, hiking to safety during a blizzard is a good way to get lost and die. My set up is more to stay warm and wait for help or better conditions.
In Sub-Zero temps and winds, it is important to cover all skin with at least one layer. (3-layer wicking/warming/weathering is preferred)