The authorities confirmed that 20 girls were still missing as a result of the flooding along the Guadalupe River, but the full scope of the disaster was not clear.Frantic searches were underway for people who were missing in Central Texas after heavy rain set off deadly flooding along the Guadalupe River on Friday, authorities said. A summer camp for girls along the river in Hunt, Texas, told parents on Friday morning that not all of its campers were accounted for after “catastrophic” flooding overnight. In nearby Kerrville, some people huddled inside a church’s activity center, and others looked distraught, shivering...