Fresh rounds of torrential rain have sent floodwaters surging across parts of Texas Hill Country, bringing the Guadalupe River close to levels that threaten areas near Camp Mystic, the site of one of the deadliest tragedies of last year’s catastrophic floods.

The National Weather Service warned Thursday that a “large and deadly flood wave” was moving down the Guadalupe River, prompting urgent evacuation orders and rescue operations in several communities. Emergency officials urged residents to move to higher ground as floodwaters inundated roads, stranded motorists, and cut off access to parts of Uvalde and surrounding communities.