USGS · EARTHQUAKE

M 4.0 · Pagan region, Northern Mariana Islands

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

Source agencyUSGS

Provider event IDus6000tz6f

Magnitude4.0 mb

Depth178.4 km

Occurred / latest reportedSep 27, 2026, 6:54 PM UTC

Provider last updatedOct 4, 2026, 5:40 PM 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)145.6750, 18.4685

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": [
    145.675,
    18.4685,
    178.407
  ]
}

Revision observations

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

Collected2026-10-21T01:50:26.249Z· Provider update2026-10-04T17:40:33.040Z · Magnitude 4

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