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Northern California Earthquake Catalog Search

Acknowledge the NCEDC

Cite the NCEDC:

"NCEDC (2014), Northern California Earthquake Data Center. UC Berkeley Seismological Laboratory. Dataset. doi:10.7932/NCEDC."

Acknowledge the NCEDC:

"Waveform data, metadata, or data products for this study were accessed through the Northern California Earthquake Data Center (NCEDC), doi:10.7932/NCEDC."

Please use these statements in your publication acknowledgments.

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Help using this catalog search is available.

Catalog format descriptions.

Input Catalog
Output Format

Earthquake Parameters
Start Time: End Time:
Min Magnitude: Max Magnitude:
Min Depth (km): Max Depth (km):

Min Latitude: Max Latitude:
Min Longitude: Max Longitude:
Event Types: Earthquakes Blasts (Quarry or Nuclear) All Events
Include Events with no reported Magnitude
Additional Search Parameters

Output Mechanism Send output to my browser.
Send output to an anonymous FTP file on the NCEDC.

Line limit on output:


When using the double-difference catalog please use the following two references for the base catalog (1984-2011) and the real-time catalog (2012-present), respectively:


When you use data from the NCEDC, please provide a proper acknowledgement of the data source.

Questions, Comments, and Feedback

We encourage you to contact us with questions,comments and feedback concerning the NCEDC. You can contact us via email at