A week after the devastating Texas flooding, serious questions remain about what actions local leaders took after ominous warnings from the National Weather Service, echoing other recent high-profile natural disasters marked by accusations of government complacency.

Parts of Central Texas are under yet another flood watch this weekend. The impacted areas are the same as those hit by the July 4 deadly floods.

Over the last decade, an array of local and state agencies have missed opportunities to fund a flood warning system intended to avert the type of disaster that swept away dozens of youth campers and others in Kerr County,

Emergency officials are starting to focus on alert systems as they search for answers about how the flash flooding swept away so many.

More than 170 people are still believed to be missing a week after the forceful floodwater hit over the July Fourth weekend.

Twice, the Texas Division of Emergency Management turned down Kerr County's requests for money to improve flood warnings.

State and local officials in Texas have come under scrutiny over the lack of sirens in place to warn people of impending flash flooding.

When deadly floods swept through Texas, the National Weather Service issued a series of warnings that should have automatically triggered alerts to be sent to cellphones as the Guadalupe River began to rise.

Center Point, Texas, RV park owner David Chambers said he was stunned not to have had a better warning as floodwaters rose.

Texas officials are being questioned about warning systems ahead of the deadly floods. As NBC News' Priscilla Thompson reports, Kerr County doesn't have a county-wide siren warning system in place.