About this map

This dashboard shows recent earthquakes from the USGS GeoJSON feeds on top of LatLng vector tiles. Points are fixed to USGS coordinates and filtered by the current map viewport.

Data

• USGS all-day and all-week GeoJSON feeds are cached in worker memory for fast viewport queries.
• Map circles are sized by magnitude and colored by severity.
• Depth is shown in kilometers; shallow events are counted when depth is under 70 km.