USGS · EARTHQUAKE

M 1.6 · 8 km W of Cobb, CA

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

Source agencyUSGS

Provider event IDnc75452806

Magnitude1.6 md

Depth1.8 km

Occurred / latest reportedOct 21, 2026, 6:20 AM UTC

Provider last updatedOct 21, 2026, 6:42 AM UTC

TerraPulse collectedOct 21, 2026, 6:44 AM UTC

Catalog statusautomatic

Reported geometryPoint

Location qualityValidated coordinate format (not accuracy assurance)

Country assignmentUnited States

Coordinates (lon, lat)-122.8150, 38.8360

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": [
    -122.815002441406,
    38.8359985351562,
    1.82000005245209
  ]
}

Revision observations

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

Collected2026-10-21T06:44:05.576Z· Provider update2026-10-21T06:42:22.591Z · Magnitude 1.59

Collected2026-10-21T06:24:04.105Z· Provider update2026-10-21T06:21:41.454Z · Magnitude 1.59

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