The USGS has realtime Maps of the
Latest Earthquakes in the USA or World - Last 7 Dayshttp://earthquake.usgs.gov/earthquakes/map/Latest Earthquakes in the USA - Last 7 days
Check out our new Beta Earthquake Maps.
USA earthquakes with M1+ located by USGS and Contributing Agencies.
Also see the World Recent Quakes Maps!
Science Centers
Our scientists study earthquakes around the world. Learn about Science Center activities, research, regional seismic network monitoring, and local activities of interest conducted in our various offices around the US.
http://earthquake.usgs.gov/