A storm riding a blast of cold air will unleash heavy snow on the central and southern Appalachians Saturday and will turn toward part of New England by Sunday. Heavy wet snow and falling trees could block some roads in parts of the Appalachians. Even in the absence of heavy snow for the major cities, including along the I-95 corridor, gusty winds can lead to travel problems for a time. Flight delays are possible in Washington, D.C., Philadelphia, New York City and Boston. After bringing some of the first snowflakes of the season to areas from Chicago and Detroit to Indianapolis and Cincinnati on Halloween evening, the storm will dive southward later Friday night and on Saturday. Accumulating snow is in store for the mountains from southwestern Pennsylvania to northern Georgia. The heaviest snow will fall in the area from western Maryland and West Virginia to western North Carolina and eastern Tennessee. According to AccuWeather Chief Meteorologist Elliot Abrams, "The highest elevations from West Virginia to North Carolina could pick up a foot of snow." While the snow will melt or turn very slushy on major roads in the mountains, enough can fall to make some roads slippery. Power outages are also possible in parts of the central and southern Appalachians as the weight of snow may bring down trees limbs and power lines. The risk will be highest for power outages as gusty winds accompany a push of cold air during and after the storm. A few snowflakes may fall east of the Carolina mountains, reaching Charlotte and Winston-Salem, North Carolina.