Since 2000, USGS has dramatically increased its ability to collect and distribute information about our Earth to users in near real-time. The USGS Advanced National Seismic System's (ANSS) ShakeMap enables emergency responders to see areas worst shaken by an earthquake within minutes of the earthquake - giving them vital information for early resource deployment to areas most in need. More than 6,000 USGS streamgages now provide up-to-the-minute information on rivers including flood information, drought data and facts needed by water managers to make the best-informed decisions. And the advanced use of space-based Interferometric Synthetic Aperature Radar (INSAR for short) enables USGS scientists to view tiny land surface changes - as little as 4 inches change - around volcanoes. Those changes can give immediate early warning of volcanic activity, months before an eruption.

Other ShakeMaps area available for:
Southern California
Northern California
Pacific Northwest
Utah

57 miles WSW of Craig, AK - Jun 28 2004, 01:49:48 AKDT 6.7

Data Sources:

• Red triangles are stations from the Caltech/USGS digital telemetered network.
• Blue triangles represent California Geological Survey (CGS) and California Strong Motion Instrumentation Program (CSMIP) dial-up stations.
• Yellow triangles represent stations from the ANZA Regional Network.
• Green triangles represent National Strong Motion Program (NSMP) dial-up stations or, on historical maps, non-digital stations from which strong motion records were digitized.

Choose "Most Recent Event" to see maps for the most recent earthquake, select one of the maps from the list of "Recent Significant Events" or click on the "Map Archive" tab at the top of the page to view past events.

http://earthquake.usgs.gov/shakemap/