Early Earthquake Warning System in iOS 5 for Japanese Users

References to a "Quake Alert" notification was found in iOS 5 for Japanese users. It seems that Apple has added a new early earthquake warning notification option to iOS 5, following the devastating earthquake in Japan earlier this year.  So, Japanese users will be able to turn on early earthquake notifications at the very bottom of the iOS 5 Notification Center settings pane. The system gives warnings from seconds to one or two minutes before the earthquake hits.

Japan has the most advanced earthquake early-warning system in the world. A nationwide online system launched in 2007, it detects tremors, calculates an earthquake’s epicenter and sends out brief warnings from its 1,000-plus seismographs scattered throughout the country, one of the most earthquake-prone nations on the planet.