USGS · EARTHQUAKE

M 1.4 · 16 km NW of Old Agency, Montana

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

Source agencyUSGS

Provider event IDmb90210803

Magnitude1.4 ml

Depth10.2 km

Occurred / latest reportedOct 17, 2026, 12:41 PM UTC

Provider last updatedOct 18, 2026, 11:12 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)-114.4213, 47.4455

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": [
    -114.421333333333,
    47.4455,
    10.23
  ]
}

Revision observations

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

Collected2026-10-21T01:50:16.849Z· Provider update2026-10-18T23:12:49.680Z · Magnitude 1.37

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