kentucky state police trooper robert purdy said the woman and child were stranded in their vehicle in high water around 9:30 a.m. friday on a rural highway in kentucky .
the lexington fire department sent a swift-water recovery team to assist with the search .
authorities in louisville , kentucky , made more than 100 water rescues early friday as a severe storm 's persistent downpour flooded roads and prompted at least one evacuation .