The National Weather Service says Flash Flood Warnings were issued on July 3 and early July 4 in Texas, giving more than three hours of warning.

In what experts call "Flash Flood Alley," the terrain reacts quickly to rainfall steep slopes, rocky ground, and narrow riverbeds leave little time for warning.

After deadly floodwaters swept through Central Texas, there are questions about the timeline of weather alerts and possible gaps in the warning system.

As climate change increases the frequency of environmental disasters, experts say federal cuts could leave California and other states vulnerable in the years ahead.

Heavy rain poured over the Texas Hill Country on Independence Day, with the flooding causing more than 100 deaths. Here's a timeline of the disaster: On July 2, the Texas Division of Emergency Management said it activated "state emergency response resources in anticipation of increased threats of flooding in parts of West and Central Texas heading into the holiday weekend.

Searchers have found 87 bodies; five campers and one counselor are still unaccounted for. (AP Video: Lekan Oyekanmi)