Latest Earthquakes

Go to the Earthquake Hazards Program Real-time Earthquake Map.  There are three columns which make up the real-time earthquake map.  The left column comprises the list of earthquakes, the center column is the map itself, and the right column is the...
Report an earthquake experience or related observation through the Did You Feel It? citizen science webpage.The best way to do this is to click on the earthquake that you think you felt on one of the lists on the Earthquakes webpage, and then select the...
The maps and lists show events which have been located by the USGS and contributing agencies within the last 30 days. They should not be considered to be complete lists of all events in the US and adjacent areas and especially should not be considered to...
The USGS and networks contributing to the Advance National Seismic System (ANSS) take great effort to provide accurate and timely earthquake information.  Occasionally our systems produce erroneous information that is released to the public via our web...
Seismologists evaluate the hypocenter location and the focal mechanism of an earthquake to decide if the earthquake occurs on a named fault. Research shows that many earthquakes occur on small, un-named faults located near well known faults. For example...
Yes, please go to Earthquake Notification Services (ENS) to sign up for free emails or text messages to your phone, or check out the many different Feeds.
1. If we get  information (alerts) from any of the tsunami centers or 2. For any earthquake, magnitude 5.0 or greater, that occurred in   a. the Pacific Ocean, or   b. Indonesia, or   c. Papua New Guinea, or   d. the Caribbean Sea, or   e. Hawaii (...
The USGS often updates an earthquake's magnitude in the hours and sometimes days following the event. Updates occur as more data become available for analysis and more time-intensive analysis is performed. Additional updates are possible as a part of the...
10 km is a "fixed depth". Sometimes data are too poor to compute a reliable depth for an earthquake. In such a case, the depth is assigned to be 10 km. In many areas around the world, reliable depths tend to average 10 km or close to it. For example, if...
Seismic signals are transmitted in real-time by radio, satellite, telemetry, and land lines from remote seismic stations to one or more of the four centers. Real-time computer systems at each center continuously monitor the Earth for the occurrence of...