GREENFIELD, Iowa (AP) — Authorities in Iowa were continuing search and rescue efforts after a deadly tornado slammed the state, devastating the town of Greenfield and killing an undisclosed number of people there. About 25 miles southwest of Greenfield, the Adams County Sheriff’s office says a woman died Tuesday when the vehicle she was driving was blown off the road during the storms near Corning, Iowa. In Greenfield, the tornado left a wide swath of obliterated homes and crumpled cars and had earlier ripped apart and crumpled massive power-producing wind turbines. Later Tuesday, the storms moved eastward to pummel parts of Illinois and Wisconsin, knocking out power to tens of thousands of customers in the two states.