NEW : Cleanup begins after tornadoes reaching 170 mph tear through Oklahoma . Storms rip off roofs , scatter sheets of metal , other debris . Score: 6 Resident says post office is gone and a church is damaged .
NEW : Cleanup begins after tornadoes reaching 170 mph tear through Oklahoma . Storms rip off roofs , scatter sheets of metal , other debris . Hardest hit is Lone Grove , about 90 miles south of the capital , Oklahoma City . Resident says post office is gone and a church is damaged .