A flash flood warning was issued by the NWS Fort Worth TX on Monday at 2:30 a.m. in effect until 5:30 a.m. The warning is for Johnson, Bosque and Hill counties.

Earlier Monday, the National Weather Service (NWS) for San Antonio warned that a "dangerous situation is occurring" in areas of Texas.

A spokesperson for Camp Mystic and its owner's family cannot confirm whether flash flood emergency alerts reached personnel on July 4.

Even when floods can be anticipated, communicating their severity to the public is a tall order. Because flash floods are very localized, even neighborhood-level warnings may seem like false alarms to some residents, leading to what the journalist Zoë Schlanger has dubbed “ alert fatigue .”

New flood warnings have been issued along the Guadalupe River in Texas less than two weeks after flooding killed more than 100 people.

Sunday morning recovering efforts were suspended in Kerr County due to heavy rainfall and a new flash flood warning issued for the Hill Country.

"It's not community to community. It's a national system," Sen. Maria Cantwell said on "Face the Nation with Margaret Brennan."