Earthquake Catalogs

SCSN Moment Tensor Catalog

NOTE: The catalog search pages will be undergoing maintenance on November 17, 2025 from 10 am Pacific Time onwards. The expected downtime is 1 hour.

About SCSN Moment Tensors and Focal Mechanisms
Information about the catalog: K Hutton et. al, BSSA (2010)
Change History for the Southern California Earthquake Catalog

Search by:

• Location, Mag, and Time
• Event ID
• Polygon
• Radius
• Multi-Mags
• Moment Tensors
• Focal Mechanisms

Note: The magnitude search contraints are for preferred catalog magnitude.

Date constraints:

From:

Year

Month

Day

To:

Year

Month

Day

Magnitude constraints:

Magnitude

<= preferred magnitude <=

Location constraints:

Latitude: (degrees)
from:

to:

Longitude: (degrees)
from:

to:

Depth: (kilometers)
from:

to:

Output Format:

Text QuakeML

Send Output to File?

yes

no, output to web page

Search Reset Values   Note: All constraints are 'AND' logic.

The earthquake catalog and associated data archived at the SCEDC are collected by the Southern California Seismic Network (SCSN), a cooperative project of Caltech and the USGS.