A line of thunderstorms Monday morning sent high winds, along with some rain and hail, over eastern Nebraska and into Iowa, knocking down tree limbs and causing power outages. High winds did blow down a few light poles on the campus of Western Iowa Tech Community College. The storms raced over parts of eastern Nebraska before 9 a.m. Monday, bring wind gusts of up to 70 mph. Omaha Public Power District reported more than 55,500 customers without power in Omaha and surrounding communities. By 10 a