Welcome
The Southern California Earthquake Data Center (SCEDC) is the archive of the Caltech/USGS Southern California Seismic Network (SCSN). It is funded by the U.S. Geological Survey (USGS) and the California Office of Emergency Services (CalOES). Its primary mission is to distribute data recorded or processed by the SCSN, a component of the California Integrated Seismic Network (CISN).
Recent Earthquakes in the Southern California Region
Use the map below to explore recent earthquake activity. This map shows the earthquake feed from the USGS
for all earthquakes in the last 7 days with the network codes of CI, NC, or NN, or between the latitude coordinates 32 and 42 and the longitude coordinates -126 and -114. The reporting region of the SCSN is shown enclosed in the
orange polyon.
Expand the left sidebar to view the event listing; selecting an event will highlight its map location. Once selected, for further
information, clicking an event ID (e.g. ci38354200) link will take you to the detailed page for that event.
Events are color-scaled by the time they occurred (red: within 1 hour; blue: within 1 day; yellow: within 7 days; grey: older)
and size-scaled by their magnitude, as represented in the legend below.
The map updates every 5 minutes with the most
recent earthquake data available, the same refresh rate as the USGS earthquake feed.
Please note that not all earthquake information displayed on this map may have been reviewed by a seismologist, and automated solutions are likely to be updated.
last hour | last day | last week | older |
MAG | M -1 | M 1 | M 3 | M 5 | M 7 |
- Extent endpoint of the availability web service now also serves seismic phase data availability(1932 - present).
- Data Discovery Map now available!
- SCSN Now Using Machine Learning Picks in Post Processing.
- Join the ShakeOut!
- Catalog Processing Status files available.
- Planned Maintenance Notice
- New Ridgecrest DAS Dataset available.
- New California-Mexico Border Catalog available.
- New waveform relocated earthquake and focal mechanism catalogs available.
- Focal Mechanism Catalog for Southern California Derived with Deep Learning Algorithms (1981-2021) Available.
- The SCSN Earthquake Catalog turns 90!