OpenAlert
Free
Free forever
Overview
OpenAlert is a Colombian Progressive Web App that aggregates earthquake data from USGS, EMSC, GEOFON and Colombia's SGC to provide real time seismic alerts and notices. It can be used directly from a browser or installed on a compatible device, giving users a lightweight way to stay informed about earthquakes without requiring a traditional mobile app.
Key features
- Real time earthquake alerts
- USGS EMSC GEOFON and SGC data
- Progressive Web App
- Browser and installable access