A significant winter storm is set to impact millions along the I-95 corridor, with forecasts indicating heavy snowfall across the Northeast and Mid-Atlantic regions. This storm, referred to as Winter Storm Demi, is expected to bring accumulating snow starting Sunday, with totals reaching up to 10 inches in some areas, including Massachusetts and Rhode Island. Various towns have declared snow emergencies, and parking bans are in effect to facilitate snow removal. The National Weather Service warns of treacherous road conditions and the potential for the coldest temperatures of the season following the storm. Residents should prepare for significant snowfall and winter weather advisories as the storm progresses through Sunday night.