New York residents may soon experience an unusual snowfall, as a combination of weather phenomena points towards a potentially snowy winter. A weakened polar vortex, coupled with the effects of La Niña and unusually warm Great Lakes, could create conditions ripe for significant snowfall across the region. While temperatures are expected to climb into the 80s this weekend, this warmth is only a temporary reprieve. As colder air masses move across the warmer Great Lakes, lake-effect snow is likely to develop, bringing localized but potentially heavy snowfalls.