Um it’s always been a overnight threat for these areas in the east. It’s better to clear out and turn cold tonight to actually support flurries after midnight.The mountains will wring out all the moisture and the areas on the downwind side of those mountains will be dry and warm. NW winds will result in the areas lying to the east and southeast to be dry, hence why you're seeing that dry slot in the upstate currently. If you want snow in those areas, it's a bad thing.