Web notification of earthquakes

The main means of dissemination of earthquake information on the web is the Recent Earthquakes Map. This is a map that lives on several different earthquake web sites, and is automatically updated after every earthquake. Updates usually occur within about three minutes of an event, but may occur faster.

The maps are hosted on several different sites:
http://pasadena.wr.usgs.gov/recenteqs/latest.htm
http://www.data.scec.org/recenteqs.html
http://quake.wr.usgs.gov/recenteqs/latest.htm
http://earthquake.usgs.gov/recenteqs
http://quake.wr.usgs.gov/recenteqs/latestfault.htm

All of these sites are fed with the same data stream, and all are updated within a few minutes of an event. The USGS sites are served through the Akamai EdgeSuite caching service, so they are resistant to being knocked down by large surges of web traffic after a large earthquake.