On Wednesday, an army of insurance adjusters fanned out to the hardest-hit residential areas of North Texas. State Farm sent Heath Harris to the McGlothren house. It was Harris’ fourth stop of the day and far from his last. It will be at least a week before the full extent of the damage in North Texas can be assessed, said Mark Hanna, spokesman for the Insurance Council of Texas, predicting that it would easily run into the tens of millions of dollars.