Weekend Storm Looking Like Ice Event

A complex storm will develop over the Midwest late this week and move east. Presently, models want to take the primary low to our west (see 12z GFS above). If this track were to verify, our area would likely see a prolonged icing event via cold air damming from the warm air aloft of the southerly flow of the system overrunning the established cold air at the surface. Depending on whether there is any secondary redevelopment of low pressure over the east coast, and how soon it would develop etc. will determine how quickly we would change back to snow. In any event after the storms passage the flow over the lakes should set up another significant lake effect event Sunday through Monday.