top of page
Important Information Regarding Earthquake Early Warnings
This project displays an emergency earthquake warning (forecast) for advanced users. Please use the information while keeping the following features in mind.
Because information is generated within seconds of an earthquake, false alarms can occur.
Information immediately after earthquake detection may have low accuracy regarding the epicenter, magnitude, and predicted seismic intensity.
Even under normal circumstances, estimated seismic intensity has an error margin of about one magnitude.
For earthquakes deeper than 150 km, the predicted maximum seismic intensity is not announced (although it may be announced based on actual shaking).
bottom of page