Around 45 million Americans are on standby for deep snow and power outages, as a major winter storm leaves the Rocky mountains and heads for east coast states. In a short-range forecast issued early on Tuesday, the US National Weather Service said: “The start of astronomical winter is under a week away, but Mother Nature is getting off to a fast start with multiple areas of winter weather forecast to impact parts of the United States through Thursday.” The same statement predicated “major winter weather impacts between Wednesday and Thursday from the central Appalachians and mid-Atlantic to the north-east”. The...