A strong winter storm is expected to bring significant snowfall to the Mid-Atlantic tonight through Monday, with up to 12 inches possible in some areas, the National Weather Service stated. The storm, originating in the Midwest, will affect states including Virginia, Maryland, and parts of Pennsylvania. Snow will begin in the Alleghenies and Shenandoah Valley between 6-9 PM, spreading eastward toward Washington DC and Baltimore by 3-5 AM Monday. The storm will intensify, with snow rates reaching 1-2 inches per hour, particularly impacting morning commuters. Light snow showers will persist through Monday evening, with brief ice accumulations possible in parts of Virginia and Maryland.