Several storm systems along an active Jet Stream are creating snow and ice over the northern tier of the nation. Up to 6" of snow is possible in the Midwest and Great Lakes through this evening, with a few inches into the Central Plains Tuesday as Winter Weather Advisories remain in effect. Most areas will see snow, but some sleet and freezing rain may form along and ahead of a front. This will add to the travel headaches from the Plains into the Northeast. Winter Storm Watches have been issued for Wednesday from Maine to Pennsylvania. Parts of New England could see up to a foot of snow. Snow continues across the West, although will gradually diminish into Tuesday. The highest mountain peaks may see nearly 2 feet of snow. For WeatherNation: Meteorologist Mace Michaels