Flash-flood warnings and watches remain in effect for parts of Central Texas into Sunday evening, dimming hopes that more survivors would be found.

Greg Abbott said emergency responders remained in a search and rescue posture, hours after the flooding along the Guadalupe River inundated nearby areas. "So many people have been swept up into an extraordinary catastrophe,

Forecasts of continued heavy rain and thunderstorms are raising concerns, as rising water levels could further hamper rescue efforts, officials say.