"It only takes a very small amount of snow to cause a flurry of problems,” said AccuWeather senior meteorologist Dan Pydynowski.

A bout of harsh winter weather driven by lake‑effect snow is bringing hazardous conditions to three states this weekend, prompting the National Weather Service (NWS) to issue winter storm warnings.

Much colder conditions are expected to arrive early next week, with confidence increasing for several very cold days centered on Tuesday.