USGS Earthquakes with geoxml3
USGS 1.0+ Earthquakes (Past Week)
Data: USGS Real-time Feed
Radius: McCue Formula (Perceptibility)
Magnitude (Color)
5.0+ (Severe)
4.0 - 4.9 (Strong)
2.0 - 3.9 (Mod)
< 2.0 (Minor)
Depth (Opacity)
Shallow (0km)
Deep (>300km)