The rising heat and humidity meant heat index values near 100 by midday, a steam bath that will continue through Thursday evening, the National Weather Service said. More than 400 National Guardsmen have been deployed across the disaster area, according to Kentucky Gov. Andy Beshear.
More than 1,300 people have been rescued, and crews were still trying to reach some people who remain cut off by floods or mudslides. Emergency shelters housed hundreds of residents who had homes destroyed or damaged. President Biden declared a federal disaster to direct relief money to counties flooded after 8 to 10.5 inches of rain fell in just 48 hours last week in the Appalachian mountain region.