High winds knocked down trees and power lines in Indianapolis as strong thunderstorms spread across the state. “We’ve got trees and hot wires down every place,” said Kathy Stockman, an Indianapolis police dispatcher. Utility crews restored electricity to thousands of customers in parts of northeastern Minnesota that were raked by high winds the night before. Winds gusting from 60 m.p.h. to 70 m.p.h. also blew down trees and power lines Saturday night and damaged roofs across parts of South Dakota, Iowa and Nebraska, and rain soaked the region, the National Weather Service said. Scattered tornadoes also were reported.