Flash floods in Texas have killed nearly 90 people, many of them children. Heavy rains fell quickly in the predawn hours Friday in the Texas Hill Country, causing the Guadalupe River to rise 26 feet in just 45 minutes.

A "worst case scenario" of meteorological events contributed to the extreme flash flooding event that killed dozens of people in the region, according to experts.

Here's what we know so far on the Texas flash floods, including where the flooding is happening, when storms could end and what could happen next.