The National Weather Service began sending flash flood warnings that should have triggered cellphone alerts a little after 1 a.m., while local officials began posting on Facebook about four hours later.

Flooding has been at the top of Texans’ minds this week, but this is not the first time that the need for flood-related measures has come up among local officials.

Flash floods in Texas have killed at least 89 people, with dozens still missing. Kerr County was hit hardest, prompting questions over warning systems. President Trump plans to visit the disaster zone.

Three days after cataclysmic floods tore through a stretch of the Texas Hill Country, officials have confirmed the deaths of 27 children and counselors who had been missing from a girls’ summer camp.

Camp Mystic, according to the Texas Tribune, has hosted the daughters of former governors, a president, and other politicians through summers. Rep. August Pfluger of Texas revealed his daughters were staying at the camp and had been evacuated and reunited with their family following the deadly flooding.