USGS · EARTHQUAKE

M 4.2 · 195 km WSW of Fukaura, Japan

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

Source agencyUSGS

Provider event IDus6000u13c

Magnitude4.2 mb

Depth269.2 km

Occurred / latest reportedOct 9, 2026, 2:36 AM UTC

Provider last updatedOct 9, 2026, 4:27 AM UTC

TerraPulse collectedOct 21, 2026, 1:50 AM UTC

Catalog statusreviewed

Reported geometryPoint

Location qualityValidated coordinate format (not accuracy assurance)

Country assignmentOffshore, non-point or unassigned

Coordinates (lon, lat)137.6688, 40.2927

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": [
    137.6688,
    40.2927,
    269.153
  ]
}

Revision observations

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

Collected2026-10-21T01:50:20.854Z· Provider update2026-10-09T04:27:08.040Z · Magnitude 4.2

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