New law enables satellite-based emergency alerts to reach phones when cellular service fails
A federal statute now permits the National Weather Service to transmit flash-flood warnings via satellite to smartphones if cell towers are down.
President Donald Trump signed the Mystic Alerts Act, directing the Federal Communications Commission to develop policies that embed satellite capability into the wireless emergency alert system. The law seeks to ensure National Weather Service warnings—especially life-threatening flash-flood alerts—reach mobile devices even when cell towers are offline, a shortcoming exposed by the July 2025 Texas Hill Country floods that claimed more than 100 lives, including 27 at Camp Mystic.
Sponsor U.S. Rep. August Pfluger and Senator John Cornyn highlighted that satellite alerts will fill the void left by unreliable cellular service and users who turn off automatic alerts. Under the act, carriers must notify the FCC of their plans to use satellite delivery and must inform subscribers if they choose not to. The FCC is given a year and a half to finalize the rule, with implementation slated for at least three years later. Texas lawmakers are also installing outdoor sirens, though experts caution that sirens alone are not a complete solution.
Why it matters
Satellite alerts can deliver life-saving warnings to people even when cell service is unavailable.
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