A low pressure system interacting with a surge of arctic air from western Canada continues to deliver widespread snowfall from the northern Rockies to the northern Plains early this Sunday morning. As the entire storm system continues to push southward, moderate to heavy snow is expected to develop in the central Rockies and central Plains today before turning into mixed precipitation over the southern High Plains on Monday into early Tuesday. More than a foot of snow with gusty winds and plummeting temperatures is forecast for the higher terrain across the central Rockies while a wide swatch of 6 inches or more of snow is expected across much of the central to southern High Plains. Lighter amounts of snow and wintry mix will also extend all the way into the upper Midwest. Temperatures will fall to record levels from the interior western U.S. to a large portion of the Great Plains for the next couple of days due to this early season Arctic blast. Much of the northern and central Rockies are forecast to witness sub-zero temperatures Sunday and Monday mornings. In addition, strong winds behind the Arctic front will cause blowing and drifting of snow with blizzard conditions possible in the windiest locations. Bitterly cold wind chills ranging between -10 and -20 are also expected in portions of the northern Rockies and northern Plains. This will be in stark contrast with high temperatures still in the 90s over western Texas today!