Open data · Read-only · UTC

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Observation · Evidence · Context

Research workspace

Explore the record.
Understand the evidence behind it.

Dataset

USGS catalogue records include earthquakes and other seismic events. Use Classification to select earthquakes only; unclassified historical records remain unknown, not assumed earthquakes.

Archive coverage — upstream, stored, quarantined and public

Time semantics and dataset methodology

Start is inclusive and end is exclusive, in UTC. Archive mode searches the full selected interval; the record preview is bounded independently from the graph. Historical asOf queries retain their API window limits.

Stored catalogue records are not necessarily distinct earthquakes: aliases, retractions and unresolved provider differences affect completeness. Magnitude scales are not interchangeable, and negative magnitude alone is not an error. Full-selection queries describe stored data, not a guarantee of complete provider history.

RangeEnding at the selected End time

Uses selected End time; coverage varies by product

All time — full stored history, with the same search filters

Start (UTC) *

End (UTC) *

Page size

Additional filters (21)

Bounding box (west,south,east,north)

Latitude

Longitude

Radius (km)

Information cutoff (UTC)

SourceSeparate values with commas.

StatusSeparate values with commas.

Search text

Min Magnitude

Max Magnitude

Min Depth Km

Max Depth Km

AlertSeparate values with commas.

Tsunami

Min Severity

Max Severity

Sort

Cursor

Format

Classification

Native event typeSeparate values with commas.

GET /api/v1/earthquakes

Data over time

UTC · independent archive query

Search to graph all matching records across the selected range.

Selection overview

Full range · server calculated

Run a search to calculate statistics across the complete filtered selection.

Matching stored records: —
First matching timestamp: Not available
Last matching timestamp: Not available
Time placement: Not assessed

Source response

Choose a dataset and time range, then search. Explore records and their provenance, or download the original JSON.

Research workspace

Data over time

Selection overview

Source response

Earthquakes

Volcanoes

Solar

Weather

Astronomy

Hazards

GNSS

Data status