USGS · EARTHQUAKE

M 1.8 · 13 km SSE of Volcano, Hawaii

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

Source agencyUSGS

Provider event IDhv75061261

Magnitude1.8 ml

Depth0.3 km

Occurred / latest reportedOct 20, 2026, 8:31 AM UTC

Provider last updatedOct 20, 2026, 7:35 PM UTC

TerraPulse collectedOct 21, 2026, 1:50 AM UTC

Catalog statusreviewed

Reported geometryPoint

Location qualityValidated coordinate format (not accuracy assurance)

Country assignmentUnited States

Coordinates (lon, lat)-155.1812, 19.3288

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": [
    -155.181166666667,
    19.3288333333333,
    0.34
  ]
}

Revision observations

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

Collected2026-10-21T01:50:15.154Z· Provider update2026-10-20T19:35:34.100Z · Magnitude 1.75

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