USGS · EARTHQUAKE

M 4.9 · 5 km S of Sakai, Japan

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

Source agencyUSGS

Provider event IDus6000ty7u

Magnitude4.9 mww

Depth68.5 km

Occurred / latest reportedSep 28, 2026, 7:45 PM UTC

Provider last updatedOct 18, 2026, 6:35 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)139.7894, 36.0471

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": [
    139.7894,
    36.0471,
    68.519
  ]
}

Revision observations

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

Collected2026-10-21T01:50:25.521Z· Provider update2026-10-18T06:35:39.411Z · Magnitude 4.9

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