USGS · EARTHQUAKE

M 0.9 · 79 km NNW of Karluk, Alaska

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

Source agencyUSGS

Provider event IDaka2026uvcthh

Magnitude0.9 ml

Depth5.0 km

Occurred / latest reportedOct 20, 2026, 11:10 PM UTC

Provider last updatedOct 20, 2026, 11:10 PM UTC

TerraPulse collectedOct 21, 2026, 1:50 AM UTC

Catalog statusautomatic

Reported geometryPoint

Location qualityValidated coordinate format (not accuracy assurance)

Country assignmentUnited States

Coordinates (lon, lat)-155.0210, 58.2130

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": [
    -155.021,
    58.213,
    5
  ]
}

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 update2026-10-20T23:10:47.074Z · Magnitude 0.9

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