FDSN Event Web Service

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

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The FDSN event web service returns event(earthquake) in QuakeML format (schema here). Events may be selected based on location, time, catalog, contributor and internal identifiers. By default, events are retrieved from the SCEDC catalog. These default results include the catalog's "primary origin" and "primary magnitude" for each event, they may optionally include all available origin and magnitude estimates. By default, results are returned in QuakeML format, but may also be requested in text format. Please limit your search to smaller time periods.

Note: Due to current limitations, we are no longer able to support the 'includeallorigins' option.

To see a full list of service parameters and their usage, click

Examples:

Below is a full list of service parameters and their usage.

Query:/fdsnws/event/1/query?[query-parameters]
where query-parameters:
starttime="YYYY-MM-DDThh:hh:ss"	Optional	Specify the start date and time.
endtime="YYYY-MM-DDThh:hh:ss"	Optional	Specify the end date and time.
minmag="magnitude"	Optional	Specify the lower limit of magnitude.
maxmag="magnitude"	Optional	Specify the upper limit of magnitude.
mindepth="depth "	Optional	Specify the lower limit of depth in km.
maxdepth="depth"	Optional	Specify the upper limit of depth in km.
BOX search parameters, incompatible with Radial search parameters
minlat="degrees"	Optional	Specify minimum latitude, northern boundary [-39 <= X <= 39].
maxlat="degrees"	Optional	Specify maximum latitude, southern boundary [-30 <= X <= 30].
minlon="degrees"	Optional	Specify minimum longitude, western boundary [-124 <= X <= 124].
maxlon="degrees"	Optional	Specify maximum longitude, eastern boundary [-111 <= X <= 111].
contributor="SCSN"	Optional	This is readonly and set to SCSN for this web service.
catalog=[SCEDC, DS2000, HAUK2003, HAUK2004, SHLK2005, YHS2011]	Optional	Specify the catalog to be queried for events. Default is SCEDC. Filters under "Others" ar\ e not applicable when catalog is not SCEDC and will be greyed out.
Radial search parameters, incompatible with BOX search parameters
[lat,lon,maxradius [minradius]]="degrees"	Optional	Geographic circular bounding area. All lat, lon, maxradius parameters must be given together. minradius parameter is optional and defaults to zero. Cannot be combined with minlat, maxlat, minlon, maxlon.
Event search parameters
eventid="evid1,evid2,...."	Optional	Specify one or more eventids (comma separated).
Other filters
magtype="magtype"	Optional	Specify the magnitude type.
includeallmagnitudes=true/false	Optional	Specify if results should include all magnitudes associated with an event. Default is display only preferred magnitude.
includearrivals=true/false	Optional	Specify if results should include all arrivals associated with an event.
includemechanisms=true/false	Optional	Specify if results should include focal mechanisms, moment tensors associated with an event.
limit="limit"	Optional	Limit results to the specified number.
offset="offset"	Optional	Return results starting at the event count specified.
orderby="orderby"	Optional	Specify how the results should be ordered. Options are time, time ascending or magnitude, magnitude ascending. Default is time, descending.
format=xml/text	Optional	Specify output format (Default is xml or quakeml).
nodata=204\|404	Optional	Specify which HTML status code is returned when no data is found (Default is 204).

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Earthquake Parameters

Start Time

End Time

Min Mag

Max Mag

Min Depth

Max Depth

Contributor

Catalog

Location (all inputs are in decimal degrees)

Min Lat

Max Lat

Min Lon

Max Lon

Ring Radius (all inputs are in decimal degrees)

Lat

Lon

Min Radius

Max Radius

Event ID

Others

Event Types

Geographic Types

Mag Types

Include all magnitudes

Include arrivals

Include mechanisms

Output

Offset

Limit

Order By

Format

URL: /fdsnws/event/1/query?nodata=404&starttime=2019-01-01T00:00:00&endtime=2019-01-02T00:00:00&catalog=SCEDC&etype=any&gtype=any&magtype=all&format=xml&orderby=time

WADL

Retrieve the WADL associated with this service: application.wadl

Please use the citation:
SCEDC (2013): Southern California Earthquake Data Center. Caltech. Dataset. doi:10.7909/C3WD3xH1 to cite data downloaded from the SCEDC.

Version: FDSN Event Service:1.1.1