"An essential role of the Federal Government is to minimize loss of life and property that results from natural disasters such as earthquakes. The U.S. Geological Survey, through its National Earthquake Information Center, helps fulfill this responsibility. Since 1973, the U.S. Geological Survey (USGS) has provided up-to-date earthquake information to scientists, government agencies, universities, private companies, and the general public. This information includes determinations of the locations and severity of seismic events in the United States and throughout the world, including the rapid analysis of significant earthquakes on a 24-hour basis. Seism-mologists around the world use this information to increase their understanding of earthquakes and to better evaluate earthquake hazards. The USGS National Earthquake Information Center (NEIC) in Golden, Colorado, operates a 24-hour-a-day Earthquake Early Alerting Service. This service rapidly and accurately determines the location and magnitude of significant earthquakes throughout the world."
U.S. Geological Survey: http://www.usgs.gov/