USGS · EARTHQUAKE

M 5.3 · 0 km NNE of Yōkaichiba, Japan

A reported observation from the original data provider. Values may be revised as new information becomes available.

Source agencyUSGS

Provider event IDus6000tytg

Magnitude5.3 mww

Depth41.6 km

Occurred / latest reportedOct 1, 2026, 12:27 PM UTC

Provider last updatedOct 2, 2026, 12:58 AM UTC

TerraPulse collectedOct 21, 2026, 1:50 AM UTC

Catalog statusreviewed

Reported geometryPoint

Location qualityValidated coordinate format (not accuracy assurance)

Country assignmentJapan

Coordinates (lon, lat)140.5507, 35.7025

GDACS alertNot applicable

Magnitude measures earthquake size; intensity describes shaking at a location. Magnitude alone does not establish casualties or damage.

USGS tsunami flag:0 (not set). This flag does not confirm a tsunami or an official tsunami warning. Consult official warning centers.

Original reported GeoJSON geometry

{
  "type": "Point",
  "coordinates": [
    140.5507,
    35.7025,
    41.649
  ]
}

Revision observations

Changes observed since TerraPulse began collecting this event; this is not a complete provider revision history.

Collected2026-10-21T01:50:24.051Z· Provider update2026-10-02T00:58:58.566Z · Magnitude 5.3

Geographic proximity only; events have not been merged or confirmed as related. Distances use the first reported coordinate for non-point geometries.