USGS · EARTHQUAKE

M 1.1 · 5 km W of Yucaipa, CA

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

Source agencyUSGS

Provider event IDci41349967

Magnitude1.1 ml

Depth16.6 km

Occurred / latest reportedOct 21, 2026, 4:21 AM UTC

Provider last updatedOct 21, 2026, 4:25 AM UTC

TerraPulse collectedOct 21, 2026, 4:26 AM UTC

Catalog statusautomatic

Reported geometryPoint

Location qualityValidated coordinate format (not accuracy assurance)

Country assignmentUnited States

Coordinates (lon, lat)-117.0945, 34.0260

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": [
    -117.0945,
    34.026,
    16.65
  ]
}

Revision observations

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

Collected2026-10-21T04:26:17.727Z· Provider update2026-10-21T04:25:14.186Z · Magnitude 1.06

Collected2026-10-21T04:25:05.047Z· Provider update2026-10-21T04:23:45.290Z · Magnitude 1.41474497474587

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