In parts of the US, snow has arrived more than a month earlier that its usual first appearance.<br /><br />Although the levels do not compare to usual winter standards, the early start could be a harbinger of rougher weather to come.<br /><br />The Farmers' Almanac, famous for its long-range weather predictions, says the winter of 2011-2012 will be unusually cold and stormy across the US.<br /><br />The National Weather Service agrees, blaming the cyclical weather phenomenon known as La Nina.<br /><br />Al Jazeera's Tom Ackerman reports.