In order for users of receiving terminals to use Earthquake Early Warnings properly (according to their purpose of use), the Japan Meteorological Agency (JMA) has compiled the "Guidelines for Functions and Distribution Capability of Receiving Terminal Necessary for Appropriate Use of Earthquake Early Warning". (For details of these guidelines, please refer to the JMA website). (Japanese only)
The following is the compliance status of the Earthquake Early Warning Guidelines for the NERV Disaster Prevention App.
In this application, we use the name of Earthquake Early Warning (Forecast) and Earthquake Early Warning (Alert) to inform you of an Earthquake Early Warning. In the Earthquake Early Warning (Forecast) and Earthquake Early Warning (Alert) screens displayed in the application, the seismic intensity estimation map is based on Gehirn Inc.'s own estimates of the seismic intensity for areas not announced by the JMA, combined with the information announced by the JMA. The warning area highlighted in red on the map are based on the information released by the JMA. Other information such as the name of the epicenter, the depth of the epicenter, the magnitude, expected maximum seismic intensity, and in the case of warnings, the areas subject to warnings, are shown as published by the JMA.
For deep-earthquakes, we do not provide notification and display of Earthquake Early Warning when the depth of epicenter is 150km or more, because the accuracy of seismic intensity estimations cannot be ensured technically. Even if the depth is less than 150km, the accuracy of seismic intensity estimation may not be sufficient.