SNOW IN THE FORECAST: A new, fast-moving clipper system is set to sweep across parts of the U.S., putting 100 million Americans in the crosshairs of chilling winds and snow. Winter storm warnings and lake effect snow warnings are in effect in western Michigan, western Pennsylvania and western New York, where up to 1 foot of snow could fall over the next few days. ABC News' Trevor Ault is in Watertown, New York with the latest. #snow #weather #storm #forecast #news #abcnews