"Life-threatening flash flooding" is ongoing in Kerr and Gillespie Counties -- including the areas of Kerrville, Comfort, Ingram, Hunt, Mountain Home, Waltonia, Harper, Kerrville-Schreiner Park and Cypress Creek -- according to the National Weather Service.

"It’s hard to believe the devastation," Trump said. "Trees that are 100 years old just ripped out of the ground. I've never seen anything like this, and I've seen a lot of bad ones."