Rainfall amounts of 1-2 inches and isolated amounts of 3-5 inches are possible, the National Weather Service said.

Major flooding is expected for parts of Texas near the Frio River, the National Weather Service warns. See which counties are at risk Monday.

Another potentially life-threatening flooding event took place across Central Texas on Sunday morning, with torrential rain sending rivers and streams above their banks, forcing officials to stop search efforts along the Guadalupe River that had been underway since a catastrophic and deadly flash flooding event over the Fourth of July holiday.

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.

In what experts call "Flash Flood Alley," the terrain reacts quickly to rainfall steep slopes, rocky ground, and narrow riverbeds leave little time for warning.

Camp Mystic's executive director began evacuating campers approximately 45 minutes after the National Weather Service issued a "life-threatening flash flooding" alert.

A vigil for those who lost their lives in the flooding in the Texas Hill Country was held in Fort Worth on Monday.