Earthquakes / EVENT RECORD
M 5.2 - Chagos Archipelago region
USGS · Every measurement below belongs to the selected record.
Around the epicentre
Regional view · markers are locations, not affected areas
Magnitude
M 5.2
Scale: mb
Depth
10 km
operator assigned
Reported by people
7
Number of felt reports
USGS review
reviewed
Review does not imply final measurements
What the record tells us
USGS reports a magnitude 5.2 earthquake in Chagos Archipelago region, at a depth of 10 km.
Detailed source data captured 2026-10-07 16:59:07 UTC.
Measurements & confidence
- Event time (UTC)
- 2026-10-07 14:59:25.858 UTC
- Source updated (UTC)
- 2026-10-07 15:48:23.027 UTC
- Location
- -6.664°, 72.236°
- Stations used for location
- 87
- Horizontal error
- 6.56 km
- Depth error
- 1.849 km
- Magnitude error
- 0.054
Errors are the source’s reported uncertainty estimates, not guaranteed bounds. A depth marked “operator assigned” was fixed during analysis.
Shaking & impact
- Instrumental intensity
- Not published
- Felt-report intensity
- 3.6 CDI
- PAGER impact alert
- Not published
No published assessment does not mean no shaking or no impact. A magnitude value alone cannot establish damage or a tsunami warning.
Nearby seismic activity
Within 500 km · M2.5+ · seven days before the event through the latest query, up to seven days after
09-30
0
10-01
0
10-02
0
10-03
0
10-04
0
10-05
0
10-06
1
10-07
0
Query window: 2026-09-30 14:59:25 to 2026-10-07 16:59:07 UTC. This is spatial proximity, not an identified aftershock sequence.
View the USGS catalogue query ↗Magnitude
M 5.2
Scale: mb
Depth
10 km
operator assigned
Reported by people
7
Number of felt reports
USGS review
reviewed
Review does not imply final measurements
What the record tells us
USGS reports a magnitude 5.2 earthquake in Chagos Archipelago region, at a depth of 10 km.
Detailed source data captured 2026-10-07 16:59:07 UTC.
Measurements & confidence
- Event time (UTC)
- 2026-10-07 14:59:25.858 UTC
- Source updated (UTC)
- 2026-10-07 15:48:23.027 UTC
- Location
- -6.664°, 72.236°
- Stations used for location
- 87
- Horizontal error
- 6.56 km
- Depth error
- 1.849 km
- Magnitude error
- 0.054
Errors are the source’s reported uncertainty estimates, not guaranteed bounds. A depth marked “operator assigned” was fixed during analysis.
Shaking & impact
- Instrumental intensity
- Not published
- Felt-report intensity
- 3.6 CDI
- PAGER impact alert
- Not published
No published assessment does not mean no shaking or no impact. A magnitude value alone cannot establish damage or a tsunami warning.
Nearby seismic activity
Within 500 km · M2.5+ · seven days before the event through the latest query, up to seven days after
09-30
0
10-01
0
10-02
0
10-03
0
10-04
0
10-05
0
10-06
1
10-07
0
Query window: 2026-09-30 14:59:25 to 2026-10-07 16:59:07 UTC. This is spatial proximity, not an identified aftershock sequence.
View the USGS catalogue query ↗The record as it develops
This timeline begins when our journal started capturing details. It is not a complete USGS revision history.
Captured 2026-10-07 15:29:14 UTC
First detailed capture · M5.2 · 10 km deep · 1 nearby records
Source updated 2026-10-07 15:24:55 UTC
Captured 2026-10-07 15:44:07 UTC
Updated capture · M5.2 · 10 km deep · 1 nearby records
Source updated 2026-10-07 15:35:28 UTC
Captured 2026-10-07 15:59:07 UTC
Updated capture · M5.2 · 10 km deep · 1 nearby records
Source updated 2026-10-07 15:48:23 UTC
Captured 2026-10-07 16:59:07 UTC
Updated capture · M5.2 · 10 km deep · 1 nearby records
Source updated 2026-10-07 15:48:23 UTC
Magnitude is not shaking
Magnitude describes the earthquake’s size. The shaking experienced at a place depends on distance, depth, local ground conditions and the rupture.
Depth needs context
A reported depth describes the location of the earthquake underground. Some solutions use an assigned depth; uncertainty and review status matter.
Nearby does not mean aftershock
Our regional search finds events by distance and time. Establishing an aftershock sequence requires seismological assessment.
This is a source-linked archive. Source measurements and assessments can change. An archived bulletin is not evidence that a warning is currently active.
In the daily journal
7 October 2026 ↗SOURCE ID usgs:us6000u0rr