Officials at the Comfort Volunteer Fire Department triggered a flood warning siren last week when the Guadalupe River began to swell.
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The National Weather Service issued multiple alerts ahead of the deadly floods that devastated central Texas, but whether people actually responded to them is an important question.
The first weather emergency alert sent by the National Weather Service with urgent language instructing people to "seek higher ground now" was sent at 4:03 a.m. local time.
CBS News analysis shows there were 22 warnings sent by the National Weather Service for Kerr County and the Kerrville area, but many residents say they didn't get alerts.
The National Weather Service issued timely alerts, meteorologists say, but few were listening in the hours before the early-morning flash floods along the Guadalupe River
A small Texas town that recorded no deaths in last weekend's flood disaster had recently upgraded its emergency alert system -- the kind of setup state, county and federal officials repeatedly balked at installing in storm-ravaged Kerr County in recent years.
Officials in Texas Hill Country are starting to focus on alert systems like the one in Comfort as they search for answers on how the flash flooding swept away so many in Kerrville.
Former Kerr County commissioner Tom Moser advocated for a siren warning system about a decade ago. He believes sirens could have saved lives had they been in place.
In the wake of the deadly flash floods in Texas, state leaders are exploring whether to install more flood warning sirens. Such sirens can save lives if they're part of a larger warning system.
As the Guadalupe River swelled from a wall of water heading downstream, sirens blared over the tiny river community of Comfort -- a last-ditch warning to get out for those who had missed cellphone alerts and firefighters going street-to-street telling people to get out.
