Farther north, this has set off a persistent lake effect snow event. Lake effect snow can become intense, with conditions deteriorating rapidly. National Weather Service infographic on how lake effect snow forms (National Weather Service)The air will cross Lake Ontario and perhaps even from Lake Huron too, offering up a narrow band of high snow totals north of Syracuse through Saturday. Lake effect snow set upWe can feed off of the moisture coming down from Lake Michigan from time to time. Lake effect snow at homeHowever, it’s likely that we see the occasional burst of snow/flurries advance into parts of the New River Valley, Highlands and Roanoke Valley.