Use FTP to download waveforms, earthquake catalogs, and bulletins. You can always open it back up, or restart your computer. When it works, you can zoom in and out on the map. Use ftp with your web browser to download files and obtain data. Data are available within 20 minutes of trigger time.
Site is somewhat difficult to navigate and interpret.
Map shows epicenters in the southeastern US from July 1977 through December 1995. Includes links to images. This site has public information, lists and maps of earthquakes in the central U.S., the New Madrid Seismic Network, as well as research publications. This is part of the Memphis site, produced in conjunction with the U. S. Geological Survey, which provides additional information on the New Madrid Fault system. This page contains the seismic record of the day.