Friday, January 13, 2017

Weekend Outlook, Messy Monday Likely

High pressure  building overhead today will help to keep the Stateline area fairly quiet this weekend, despite a brief chance for a light rain snow mix or light sleet late tonight into early Saturday morning.

However, the commute Monday (if you have one) yet again has the potential to be a mess. A strong low pressure system will slowly lift north into the central plains late Sunday and then will move into Iowa and southern Wisconsin. With the current track northern Illinois and southern Wisconsin will stay mainly on the warm side of this system. But at first, temperatures will be cold enough at the surface to support sleet and freezing rain late Sunday night into Monday morning as moisture is directed north. High pressure helps to direct moisture flow as its positioned over the mid south. With a shallow cold layer, freezing rain and sleet will be likely late Sunday into Monday. Ahead of the low, there will be quite a bit of warm air advection over Illinois which will bring allow that transition to all rain Monday afternoon into Tuesday. Along with that, temperatures will make it into the 40's Monday and lasts through most of next week. Temperatures will reach 15° above average!

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