“Heart” of winter storm system to hit here this evening/overnight

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Travel conditions will deteriorate rapidly this evening and continue overnight (Blizzard Warning in effect a good portion of the Chicago area) with north to northeast winds strengthening – gusting in excess of 45 miles per hour and heavy snow/blowing snow surging/developing over northeast Illinois, as the center of low pressure moves from St. Louis to just south of Champaign this evening and north of Indianapolis into northwest Ohio overnight (see storm track on map below).  Visibility will be severely restricted and travel extremely dangerous – trees and power lines may be downed with subsequent power outages likely.

The southwest-northeast-oriented heavy snow band is projected to lay-out over the Chicago area along and north of Interstates-88 and 90 (see heavy snow probability map below with the 70% and greater probability of 8-inches or more snow tonight encircled by the green line and centered over northeast Illinois into southwest Lower Michigan).

The Monday morning commute here will be slow and treacherous – snow and winds persisting closer-in during the early-morning hours, and then gradually diminishing as the center of low pressure fades off to the east. Lake shore flooding will be likely right along and just inland of the Illinois and Indiana Lake Michigan shoreline.

Projected track of low pressure…

Probability of 8-inches or more snowfall 6PM this evening to 6AM Monday…

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