USGS · EARTHQUAKE

M 1.1 · 6 km WNW of Cobb, CA

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

Source agencyUSGS

Provider event IDnc75452731

Magnitude1.1 md

Depth2.1 km

Occurred / latest reportedOct 21, 2026, 12:55 AM UTC

Provider last updatedOct 21, 2026, 12:56 AM 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)-122.7907, 38.8347

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": [
    -122.790664672852,
    38.8346672058105,
    2.10999989509583
  ]
}

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 update2026-10-21T00:56:40.126Z · Magnitude 1.09

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