091119 404 Officials say the severe weather that tore apart structures in South Dakota's largest city appears to have spared the rest of the state. National Weather Service officials are surveying a probable tornado and straight-line winds that hit the southern part of Sioux Falls just before midnight yesterday that caused damage to at least 37 structures. There are some reports of injuries, but no word on any fatalities. One northwest Iowa school bond issue passed and another failed. Voters in