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.

The latest in a long line of winter storms is taking direct aim at the East Coast, threatening to dump heavy snow and some ice in several states. A storm that dropped snow in the Midwest was spreading across the Tennessee and Ohio Valleys on Wednesday,