USGS Earthquake API: Watch & Export Earthquakes by Region
Pricing
from $1.00 / 1,000 earthquake returneds
Earthquakes from the USGS earthquake catalog (FDSN event API) by time window, magnitude and region, or only new and changed earthquakes since your last run; failed or unchanged rows are never charged. Not affiliated with or endorsed by the USGS.
Only earthquakes of at least this magnitude (USGS minmagnitude).
Earthquakes from the last N days (UTC dates). Ignored when a start date is given. Watch mode reads the same window and returns only new and changed earthquakes.
Optional start date, YYYY-MM-DD (UTC), e.g. 2026-09-01. Overrides the window.
Rectangle: give all four edges (minLatitude, maxLatitude, minLongitude, maxLongitude). Not together with a circle.
Rectangle: northern edge, -90 to 90.
Rectangle: western edge, -360 to 360 (a rectangle may cross the date line).
Rectangle: eastern edge, -360 to 360.
Circle: give latitude, longitude and radius together. Not together with a rectangle.
Circle: centre longitude, -180 to 180.
Circle: radius in kilometres, up to 20001.6.
Optional: USGS event IDs to look up one by one (e.g. us6000tymj), besides the search. An ID the catalog doesn't have gives one free no_data row.
Empty: watch when a watch list name is given, otherwise export. "watch" returns only earthquakes that are new or changed since the last run of the watch list; "export" returns every earthquake. An explicit mode wins.
Name of your watch list (kept in your own storage between runs). Giving a name turns on watch mode. Watch mode without a name uses the list "default".
Watch mode: also return earthquakes that did not change, as free rows.
