Earthquakes / EVENT RECORD
M 4.5 - 0 km ESE of Naisano Dua, Indonesia
USGS · Every measurement below belongs to the selected record.
Around the epicentre
Regional view · markers are locations, not affected areas
Magnitude
M 4.5
Scale: mb
Depth
35 km
operator assigned
Reported by people
Not published
Number of felt reports
USGS review
reviewed
Review does not imply final measurements
What the record tells us
USGS reports a magnitude 4.5 earthquake in 0 km ESE of Naisano Dua, Indonesia, at a depth of 35 km.
Detailed source data captured 2026-09-28 22:48:48 UTC.
Measurements & confidence
- Event time (UTC)
- 2026-09-27 21:14:51.832 UTC
- Source updated (UTC)
- 2026-09-28 01:01:35.040 UTC
- Location
- -9.600°, 123.776°
- Stations used for location
- 19
- Horizontal error
- 10.31 km
- Depth error
- 1.912 km
- Magnitude error
- 0.163
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
- Not published
- 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
09-20
0
09-21
1
09-22
1
09-23
1
09-24
0
09-25
2
09-26
2
09-27
0
09-28
0
Query window: 2026-09-20 21:14:51 to 2026-09-28 22:48:48 UTC. This is spatial proximity, not an identified aftershock sequence.
Magnitude
M 4.5
Scale: mb
Depth
35 km
operator assigned
Reported by people
Not published
Number of felt reports
USGS review
reviewed
Review does not imply final measurements
What the record tells us
USGS reports a magnitude 4.5 earthquake in 0 km ESE of Naisano Dua, Indonesia, at a depth of 35 km.
Detailed source data captured 2026-09-28 22:48:48 UTC.
Measurements & confidence
- Event time (UTC)
- 2026-09-27 21:14:51.832 UTC
- Source updated (UTC)
- 2026-09-28 01:01:35.040 UTC
- Location
- -9.600°, 123.776°
- Stations used for location
- 19
- Horizontal error
- 10.31 km
- Depth error
- 1.912 km
- Magnitude error
- 0.163
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
- Not published
- 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
09-20
0
09-21
1
09-22
1
09-23
1
09-24
0
09-25
2
09-26
2
09-27
0
09-28
0
Query window: 2026-09-20 21:14:51 to 2026-09-28 22:48:48 UTC. This is spatial proximity, not an identified aftershock sequence.
The record as it develops
This timeline begins when our journal started capturing details. It is not a complete USGS revision history.
Captured 2026-09-28 19:03:31 UTC
First detailed capture · M4.5 · 35 km deep · 7 nearby records
Source updated 2026-09-28 01:01:35 UTC
Captured 2026-09-28 20:03:48 UTC
Updated capture · M4.5 · 35 km deep · 7 nearby records
Source updated 2026-09-28 01:01:35 UTC
Captured 2026-09-28 21:18:48 UTC
Updated capture · M4.5 · 35 km deep · 7 nearby records
Source updated 2026-09-28 01:01:35 UTC
Captured 2026-09-28 22:48:48 UTC
Updated capture · M4.5 · 35 km deep · 7 nearby records
Source updated 2026-09-28 01:01:35 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
28 September 2026 ↗SOURCE ID usgs:us6000ty0k