Right on schedule, accumulating snow spread across the Chicago area from the west Thursday evening. By the Friday morning commute, heavy snow falling at a rate of an inch/hour at times was expected to add up to an additional 6 to 10-inches of new snow over the already 4 to 5-inch snow cover we started with on Thursday.
Snowfall will continue Friday and Friday night with storm totals in excess of a foot. Snow should diminish Saturday morning with a break in action until another round of accumulating snow, perhaps 3 to 5-inches hits later Saturday night into Sunday morning. By the time snow ends from the west later Sunday morning, Chicagoans could see snow depths approaching 2-feet in some locations north of Interstate-80.