DES MOINES, Iowa (AP) — A winter storm buried much of Iowa and Nebraska under more than a half-foot of snow. The National Weather Service says just over 8 inches of snow had piled up in Des Moines by midday Sunday, with totals a little higher in parts of southwest Iowa. About 6 inches of snow was reported in the Omaha area. Atlantic received 9.5-inches through 7-a.m., and another 1.5 inches afterward, for a total of 11-inches. The weather service issued a winter weather advisory throughout Iowa and for northeast Nebraska. Highways in Iowa were covered in snow and officials recommended that people stay off the roads if possible. Temperatures are expected to remain below freezing, and more snow is forecast Tuesday night.