Earthquake watcher allows to analyze the behavior of earthquakes of different areas, in different period of time. In particular you can locate earthquakes in real-time, compare their strength and get an idea of the seismicity. To have a full view data can be visualized in different ways using:
Shows an indicator where the earthquakes occurred.
Shows indicators of different size and color depending on the magnitude of the earthquakes.
Shows the seismicity of the analyzed area using an heatmap.
Shows the behaviour the analyzed area, in particular you can analyze the number of earthquakes happened in a specific range of time, comparing their strength and the gap between them.
Data are fetched in real time from USGS Hazard program, using the provided API using the GeoJSON format. It is then possible to specify a range of magnitude/time to consider in order to analyze only data you are looking for. Earthquakes information retrieved also contain a link to the main page provided by USGS.