Japan

Japan's Earthquake Warning System Triggered in Error

Probably caused a few unneeded adrenaline rushes

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Japan's earthquake early warning system was triggered in error today, causing some bullet trains to stop and jamming mobile-phone lines.

A magnitude-2.3 earthquake struck Wakayama prefecture in western Japan at 4:56 p.m. local time, after the country's warning system predicted a magnitude-7.8 quake, according to theJapan Meteorological Agency.