Here's what the National Weather Service for the Washington D.C./Balitmore area is calling for tonight and tomorrow: "Snow and areas of blowing snow. The snow could be heavy at times. Low around 27. Blustery, with a northeast wind between 13 and 22 mph. Chance of precipitation is 100%. New snow accumulation of 16 to 22 inches possible. Saturday: Snow and areas of blowing snow. High near 30. Blustery, with a north wind between 17 and 20 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible."