The conditions are life threatening and could flood creeks, streams, streets, highways, underpasses and "urban areas," according to the NWS.

The organizations working together to help the flood victims said that 'no additional in-kind donations (clothing, food, supplies) are needed in Kerrville.' They said the best way to help is with monetary donations.

Officials say that at least 161 are still unaccounted for after the July Fourth floods when waters of the Guadalupe rose to historic levels in Central Texas.

Plans to develop a flood monitoring system in the Texas county hit hardest by deadly floods were scheduled to begin only a few weeks later.

With more than 170 still missing, communities must reconcile how to pick up the pieces around a waterway that remains both a wellspring and a looming menace.

After hearing a young woman scream for her life on the flooded Guadalupe River, Carl Jeter called first responders to rescue her after she tread water for 15 miles.

Camp Mystic camper Blakely McCrory, 8, died in the Texas floods on the Fourth of July shortly after her dad and uncle died. Her mom, Lindsey McLeod McCrory, tells PEOPLE about Blakely's 'contagious spirit' and the final letter she received from her.

The alert says there is a high chance the Guadalupe River will flood on Sunday. They’re asking for all people, equipment and vehicles to move away from the river immediately. They also said all volunteer operations are suspended until further notice, stating “safety of lives is the highest priority.”