USGS Earthquake Hazards Program · OBSERVATION ARCHIVE
USGS M4.5+ earthquakes — past 24 hours history
Latest collected source version for each reference date or period. Monthly, quarterly and annual source dates encode the first day of the reference month, quarter or year, not publication time. For rolling-window sources this is the latest snapshot, not a daily total. Earlier snapshots remain in the audit trail.
| Source date / time | earthquakes reported in USGS past-day feed | Versions | Evidence |
|---|---|---|---|
| 2026-10-18T00:30:08.000Z | 9 | 2 | Source document |
| 2026-10-17T23:59:59.000Z | 9 | 97 | Source document |
| 2026-10-16T23:57:08.000Z | 16 | 8 | Source document |
History JSON · Latest observation
History includes live collection and verified publisher-archive imports; retrieval times record when Angeloi fetched the evidence, not when historical observations were originally published. Coverage may be incomplete. Source versions track the full retrieved document and may include changes to other metrics.