The cost of damage from a tornado that ripped through Iowa City Thursday night will likely top $12 million. Saturday's sunny sky and light breeze allowed many residents to finish patching their roofs and moving possessions from homes destroyed when the tornado cut a 3 1/2-mile swath through Iowa City. National Guard soldiers stationed around Iowa City were dismissed Saturday afternoon, and power was restored to most residents, officials said. The tornado caused at least $4 million in damage to city and county property and that estimate is expected to increase by $2 million to $3 million over coming days as more is learned about the damage.