ATLANTA (AP) — A dangerous winter storm combining high winds and ice is sweeping through parts of the U.S. Southeast, knocking out power, felling trees and fences and coating roads with a treacherous frigid glaze. Tens of thousands of customers were without power Sunday in Georgia, North Carolina, South Carolina and Florida. Weather forecasters say more than an inch of snow fell per hour in some parts of the Carolinas, Georgia, Tennessee and Virginia. The storm was making air travel extremely difficult in some parts of the South. But the nation’s hardest-hit airport — Charlotte Douglas International — remained open around dawn Sunday.