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Query for Events, Primary Origins, Preferred Magnitudes

Only origins and magnitudes matching criteria are displayed which can result in no primary origin displayed.
If primary origins and preferred magnitudes are not checked, magnitudes will be shown with source origins.

Important Note

SeismiQuery for events is outdated and should no longer be used. Please use the FDSN Event web service for all event queries. (An event URL builder is also available.) If you wish to search a catalog or for events, please use the following websites:

This event query interface will be turned off on December 31st, 2013.

mag >=    <= mag type
depth >=  <=  
catalog origin contributor
View earliest/latest origin times for each catalog... About catalogs...
primary origins   preferred magnitudes   most recent first
only show origins with arrivals show arrivals
region text

Options to create a WEED file or make a map appear after "View Results".

latitude and longitude




Get Coordinates from Map





Click on the map icon to get coordinates from an interactive map

You can search by latitude and longitude OR Flinn-Engdahl codes or text - but not both.

Help with this query

How this query works

We load events from several sources including USGS ENS alert, USGS QED, USGS Weekly PDE, USGS Monthly PDE, GCMT, and ISC dating from 1960 to the present. We also provide mapping and WEED file output options.

Mapping Events
When "Make Event Map" is selected on the results page, one event per group is selected for the map. The event listing selected is the one with the largest magnitude for that group. If there are two listings with the same magnitude in a group, the one from the most accurate catalog for that time period is selected. ( more details )


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