Powerful winter storm dumps heavy snow, causing flight delays, slick roads and school closings

ATLANTA (AP) — A powerful winter storm that dumped heavy snow and glazed roads with ice across much of Texas and Oklahoma lumbered eastward into southern U.S. states Friday, making for dicey travel and a rare snow day for many students.

Arkansas and North Carolina mobilized their National Guards for tasks such as helping stranded motorists, as governors across multiple states declared states of emergency. School was canceled for millions of children across a wide tract of southern states...