California Earthquake Puts Early Warning System to the Test
An alert is triggered when sensors pick up the first signs of a strong earthquake.
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An alert is triggered when sensors pick up the first signs of a strong earthquake.
As sensors picked up the first signs of a strong earthquake jolting the Northern California coast, an alert was blasted to 3 million smartphone users telling them to “drop, cover, hold on.” It was hailed as the biggest test yet of the warning system since its public launch. But the…
Various phone apps use ShakeAlert data to notify users.
The temblor Tuesday was the biggest test yet to the ShakeAlert system since it launched in 2019.
An earthquake warning system operated by the U.S. Geological Survey warned 3 million people about a quake that jolted Northern California's coast.