A fast-moving clipper system is bringing additional snow to the Northeast, prompting expanded Winter Weather Advisories just in time for the evening commute. While most areas will see only light snowfall, the timing during rush hour could still create slippery roads and travel delays. This winter season has already delivered above-average snowfall across the Northeast, and this latest system will add to the region’s seasonal total as it moves through Wednesday. Snow is spreading across western New York, Pennsylvania, and New England as the system tracks eastward from southern Canada.