Overview

• At least 13 people have died and nearly two dozen remain missing after a flash flood swept through Kerr County on Friday morning.
• The National Weather Service upgraded a Thursday flood watch to a flood warning overnight that affected roughly 30,000 residents along the Guadalupe River.
• More than 10 inches of rain fell before dawn Friday, sending swift, powerful currents through normally calm creeks and trapping residents and motorists.
• Almost half of all flash flood fatalities involve vehicles as cars become difficult to control in six inches of water and can be swept away by 18 inches.
• National Weather Service data show that flash floods can form within hours of heavy rainfall and impact areas far downstream of storm cells.