BISMARCK, N.D. — Some of the first wintry weather of the season is on the way for much of the U.S. in the coming days, including potentially record low temperatures for parts of the South and snow in the Northern Plains. “Seems like a shot across the bow,” said Judah Cohen, a research scientist at MIT. The Dakotas and parts of southern Minnesota have the highest potential for snowfall late Friday through Saturday morning, including some areas that could see as much as 2 to 3 inches of snow,