USGS · EARTHQUAKE

M 4.3 · 30 km S of Yilan, Taiwan

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

Source agencyUSGS

Provider event IDus6000u2xx

Magnitude4.3 mb

Depth70.0 km

Occurred / latest reportedOct 17, 2026, 3:13 AM UTC

Provider last updatedOct 18, 2026, 1:49 AM UTC

TerraPulse collectedOct 21, 2026, 1:50 AM UTC

Catalog statusreviewed

Reported geometryPoint

Location qualityValidated coordinate format (not accuracy assurance)

Country assignmentTaiwan

Coordinates (lon, lat)121.8058, 24.4834

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": [
    121.8058,
    24.4834,
    70.005
  ]
}

Revision observations

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

Collected2026-10-21T01:50:17.466Z· Provider update2026-10-18T01:49:18.040Z · Magnitude 4.3

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