The Washington Post' obtained messages from a National Weather Service meteorologist warning Kerr County officials about potential flash flooding beginning at 1 a.m. on July 4

This part of Texas Hill Country is known for flash floods. Why were so many people caught off guard when the river turned violent?

The Texas Hill Country has been notorious for flash floods caused by the Guadalupe River. Here's why the area is called "Flash Flood Alley."

Catherine Wendlandt, a freelance writer in Texas who has written stories for Chron, attended Camp Mystic as a camper from 2004 to '13, then served as a counselor from 2014 to '16. Wendlandt shared this tribute to camp counselors,

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.

After hours of waiting and praying in the attic, the water stopped rising and the family was rescued. A first responder helped Matteson, wearing a navy and pink floral dress and quilted white jacket, into the back of a car. Her family survived. Their home was not so lucky.

Here's what to know about the deadly flooding, the colossal weather system that drove it and ongoing efforts to identify victims.