How geography, climate and policy failures collided

Members of a rescue team look for missing people on the Guadalupe River in Kerrville, Texas, on July 6, 2025, following severe flash flooding that occured during the July 4 holiday weekend. AFPCaption "There's no such thing as a natural disaster," geographers like to say a reminder that human choices turn hazards into tragedies. The Texas flash floods this weekend that left more than a hundred dead, including many children, offer a stark illustration. Here is a look at the intertwined forces that amplified this storm's impact. Texas's Hill Country sits in an area known as "Flash Flood Alley," explains Hatim Sharif, a hydrologist at the University of Texas at San Antonio. Warm Gulf air rushes up the Balcones Escarpment, a line of steep hills and cliffs that arcs southwest down from near Dalla cools, and dumps torrents onto thin soils that quickly give way to bedrock. Runoff then funnels through a dense web of creeks. "Water will rise very, very quickly, within minutes or a few hours," Sharif told AFP. The early hours of July 4 proved that; Around 3:00 am, a gauge near Camp Mystic in Hunt showed the Guadalupe River rising nearly a foot (30 centimetres) every five minutes; by 4:30 am the river had surged more than 20 feet, National Weather Service data show. That's enough water to sweep away people, vehicles and buildings. An urgent NWS warning went out shortly after 1 am, but most campers were asleep; phones are banned, coverage is patchy, and darkness makes escape routes hard to judge. Sharif urges the use of hydrologic forecasts that convert rainfall into likely river levels. "Rainfall needs to be translated into runoff," he said. "If you have 10 inches, what will happen?" Summer camps have long been drawn to the region for its natural beauty. But with increasing risks, Sharif warns that treating these sites as safe or permanent is unwise. A warmer atmosphere holds more moisture, loading the dice for heavier downpours. A new analysis by ClimaMeter finds that the meteorological conditions preceding the floods, which delivered more than twice the monthly average rainfall in a single day, could not be explained by natural variability alone. "Climate change is already affecting us, so we need to adapt," said Mireia Ginesta, a climate scientist at the University of Oxford who co-authored the research, which is funded by the European Union and the French National Centre for Scientific Research (CNRS). "We also need to cut our emissions, and make sure that proper funding is provided to the forecast services and research in general on climate change." The call comes as the National Weather Service, like other agencies, has experienced deep staffing cuts under President Donald Trump's administration. Experts stress, however, that NWS forecasters performed admirably under the circumstances. The real failure, wrote climate scientist Daniel Swain on BlueSky, "was not a bad weather prediction, it was one of 'last mile' forecast/warning dissemination." For years, commissioners in Kerr County, where the camps lie, considered flood sirens and digital alerts to replace the informal practice of summer camp staff getting on the radio and warning fellow camps. Minutes from 2016 meeting show officials labelling even a feasibility study "a little extravagant," suggesting sirens would mainly help tourists, and vouching for the word-of-mouth system. "The thought of our beautiful Kerr County having these damn sirens going off in the middle of night, I'm going to have to start drinking again to put up with y'all," Commissioner H.A. Buster Baldwin said in a transcript. The debate rolled on. Residents during meetings in 2021 expressed strident opposition toward relying on federal funds tied to the Biden administration. After the disaster, San Antonio mother Nicole Wilson, who almost sent her daughters to Camp Mystic, launched a petition on Change.org urging Governor Greg Abbott to approve a modern warning network. "Five minutes of that siren going off could have saved every single one of those children," she told AFP.

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How geography, climate and policy failures collided

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