How to design an actually good flash flood alert system

Jul 19, 2025 - 14:00
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How to design an actually good flash flood alert system
An aerial view of a river with muddy banks after a flood.
An aerial view of flash flood damage along the banks of the Guadalupe River on July 11th in Kerrville, Texas. | Photo: Getty Images

Flash floods have wrought more havoc in the US this week, from the Northeast to the Midwest, just weeks after swollen rivers took more than 130 lives across central Texas earlier this month. Frustrations have grown in the aftermath of that catastrophe over why more wasn't done to warn people in advance.

Local officials face mounting questions over whether they sent too many or sent too few mobile phone alerts to people. Some Texans have accused the state of sending out too many alerts for injured police officers in the months leading up to the floods, which may have led to residents opting out of receiving warnings. And hard-hit Kerr County …

Read the full story at The Verge.

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