Japan Earthquake Early Warning (EEW) restored

On 1-9-2024, REC has obtained a new source for real time Earthquake Early Warning (EEW) data from Japan.  EEW comes from the Japan Meteorlogical Agency (JMA) via a web service that is polled approximately once per second.  Alerts are received for all eligible events.  

Over the air alerting has not yet been restored to the J1 Radio broadcasts. 

Data from the EEW monitoring as well as post-quake information from the JMA is available for public viewing at 

Alert information is also available at the J1 Radio website at https://j1fm.tokyo and on the J1 JPlayer information ticker.  


Tuesday, January 9, 2024
Systems affected: 
J1 Earthquake Site
Issue type: