Wintry Weather Returns Tuesday

Cloud cover will be on the increase Monday ahead of yet another storm system that'll impact much of the middle of the country through the middle of the week.

The overall track of the low pressure system will determine what kind of precipitation falls across northern Illinois and southern Wisconsin, but if the current track holds a mixture of snow, sleet and freezing rain could be possible through Tuesday night.  Warm, moist air will be pulled north into Illinois late Monday night into Tuesday morning.  Low pressure is forecast to move from near the Nebraska/Kansas border, northeast into eastern Iowa/northwest Illinois by Tuesday afternoon.  This type of storm track would allow a little

more opportunity for the warm air to be pulled into the Stateline, bringing temperatures up near the freezing mark late in the afternoon.  However, the freshly fallen snow from Friday night may limit just how warm surface temperatures get.  Warm air - air that is close to 32 degrees - will move in a couple thousand feet above the surface.  If we remain close to freezing, or a little below at the surface, the probability for more freezing rain or sleet would increase.

However, if the storm track shifts a little further south the opportunity for any warmth would shift south, leaving us with mostly snow.  Tuesday will definitely be a day to keep an eye on as the both the afternoon and evening commute will be impacted.