The last in a long train of storms will bring snow and ice to the Mid-Atlantic and Carolinas on Wednesday. While Washington will be near the northern edge of the storm starting late in the morning — with a dusting to a half-inch of snow possible in the District and areas to the south by the evening — impacts will be moderate to major farther south.

An updated winter storm warning was issued by the National Weather Service on Tuesday at 9:59 p.m. valid from Wednesday 10 a.m. until Thursday 6 p.m. The warning is for