Winter storm warnings are in place for 10 states from the National Weather Service (NWS) on Thursday, with up to 30 inches of snowfall expected in some parts of the U.S. Freezing temperatures may present health risks, especially for vulnerable groups such as infants and older adults.

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.