Emergency Earthquake Alert Receiver 【Introduction to the Differences from TV and Mobile】

There are two types of emergency earthquake alerts: "warnings" for general use and "forecasts" for advanced users.
The general "warning" is issued when a maximum seismic intensity of 5- or higher is predicted and observed at two or more seismic stations, targeting areas with a predicted intensity of 4 or higher. This is mainly distributed through television, radio, and mobile devices.
In contrast, the advanced "forecast" is issued when the amplitude of P-waves or S-waves exceeds 100 gal at any seismic observation point, and the magnitude is 3.5 or higher, or the maximum predicted seismic intensity is 3 or higher. This is primarily received through dedicated receivers, systems, or apps.
The general "warning" is typically issued once, while the advanced "forecast" can be repeatedly issued as more accurate intensity predictions become available over time, reflecting the difference in their nature.
For more details, please refer to related products and catalogs.

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