All of Maryland, West Virginia, and Delaware are under a Winter Storm Warning. Much of Virginia is under a warning too, but not the whole state. Locally, the warning begins at 10pm Sunday and runs until 1am on Tuesday. The National Weather Service (NWS) has increased totals in what should be the last update prior to the start of the storm.
Much of the area is in the 7-13” range, with 6-13” in Northern VA, 5-10” in northern Maryland, and 7-14” closer to the bay. The “high end amount” is now at a whopping 13-17” (10% chance of happening) and the “low end amount” is at 4 inches (10% chance of happening). Both of those maps are available below.
Per the National Weather Service, “Conditions will rapidly deteriorate tonight with untreated and unplowed roads becoming impassable for the Monday morning and evening commutes. During the times of heaviest snowfall, even primary roads may be impassable. It is highly recommended to postpone non-essential travel.
Snowfall rates between 1 to 3 inches per hour are possible between midnight and mid-morning Monday. A second round of heavy snow is likely Monday evening before precipitation ends Monday night. If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary.”