An unusually “impactful” lake effect snow — a phenomenon where warm lake water and cold air meet to form snow — landed overnight in the Chicago area with three to four inches of snow as residents woke up to the first signs of winter.

Chicago got around two to four inches of snow late night and into Monday morning, while Lake County to Northwest Indiana got around five to 10 inches, according to the National Weather Service. Chicago was downgraded to a winter weather advisory that is expected to continue until noon today as temperatures are forecasted to be at a high of mid-30s and low of mid-20s with winds of up to 25 mph.

More lake effect snow days are expected this winter until the lake freezes over, said Zachary Yack, meteorologist at the National Weather Service, as a “wetter” winte

See Full Page