What is 'lake-effect snow'? Warm air from large bodies of water is the key ingredient
https://apnews.com/article/lake-effect-snow-great-lakes-4585da95b681455af10d2fe7df7c678a
When towns along the Great Lakes get buried in drifts of blowing snow, like several have over the past few days, weather experts start talking about the “lake effect."
Lake-effect snow often occurs in relatively narrow bands that dump copious amounts of snow. The weather phenomenon can drastically increase snowfall totals, and it may slam one area and leave another just miles away untouched.