Earthquakes / EVENT RECORD
M 4.7 - 50 km N of Fangale’ounga, Tonga
USGS · Every measurement below belongs to the selected record.
Around the epicentre
Regional view · markers are locations, not affected areas
Magnitude
M 4.7
Scale: mb
Depth
56.776 km
from location
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 4.7 earthquake in 50 km N of Fangale’ounga, Tonga, at a depth of 56.776 km.
Detailed source data captured 2026-09-30 22:29:41 UTC.
Measurements & confidence
- Event time (UTC)
- 2026-09-29 16:13:02.568 UTC
- Source updated (UTC)
- 2026-09-30 14:20:29.040 UTC
- Location
- -19.297°, -174.254°
- Stations used for location
- 107
- Horizontal error
- 20.14 km
- Depth error
- 16.68 km
- Magnitude error
- 0.048
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
09-22
1
09-23
1
09-24
1
09-25
0
09-26
0
09-27
0
09-28
1
09-29
1
09-30
0
Query window: 2026-09-22 16:13:02 to 2026-09-30 22:29:41 UTC. This is spatial proximity, not an identified aftershock sequence.
Magnitude
M 4.7
Scale: mb
Depth
56.776 km
from location
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 4.7 earthquake in 50 km N of Fangale’ounga, Tonga, at a depth of 56.776 km.
Detailed source data captured 2026-09-30 22:29:41 UTC.
Measurements & confidence
- Event time (UTC)
- 2026-09-29 16:13:02.568 UTC
- Source updated (UTC)
- 2026-09-30 14:20:29.040 UTC
- Location
- -19.297°, -174.254°
- Stations used for location
- 107
- Horizontal error
- 20.14 km
- Depth error
- 16.68 km
- Magnitude error
- 0.048
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
09-22
1
09-23
1
09-24
1
09-25
0
09-26
0
09-27
0
09-28
1
09-29
1
09-30
0
Query window: 2026-09-22 16:13:02 to 2026-09-30 22:29:41 UTC. This is spatial proximity, not an identified aftershock sequence.
Magnitude
M 4.7
Scale: mb
Depth
56.776 km
from location
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 4.7 earthquake in 50 km N of Fangale’ounga, Tonga, at a depth of 56.776 km.
Detailed source data captured 2026-09-30 22:29:41 UTC.
Measurements & confidence
- Event time (UTC)
- 2026-09-29 16:13:02.568 UTC
- Source updated (UTC)
- 2026-09-30 14:20:29.040 UTC
- Location
- -19.297°, -174.254°
- Stations used for location
- 107
- Horizontal error
- 20.14 km
- Depth error
- 16.68 km
- Magnitude error
- 0.048
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
09-22
1
09-23
1
09-24
1
09-25
0
09-26
0
09-27
0
09-28
1
09-29
1
09-30
0
Query window: 2026-09-22 16:13:02 to 2026-09-30 22:29:41 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 2026-09-29 17:29:40 UTC
First detailed capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-29 18:29:41 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-29 19:44:41 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-29 20:59:41 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-29 22:14:41 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-29 23:22:14 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 00:37:14 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 01:37:15 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 02:52:16 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 04:07:14 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 05:07:16 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 06:22:15 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 07:37:14 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 08:41:57 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 09:41:57 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 10:41:58 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 11:41:59 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 12:56:57 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 14:14:40 UTC
Updated capture · M4.8 · 10 km deep · 4 nearby records
Source updated 2026-09-29 17:15:24 UTC
Captured 2026-09-30 14:29:40 UTC
Updated capture · M4.7 · 56.776 km deep · 5 nearby records
Source updated 2026-09-30 14:20:29 UTC
Captured 2026-09-30 15:44:40 UTC
Updated capture · M4.7 · 56.776 km deep · 5 nearby records
Source updated 2026-09-30 14:20:29 UTC
Captured 2026-09-30 16:44:40 UTC
Updated capture · M4.7 · 56.776 km deep · 5 nearby records
Source updated 2026-09-30 14:20:29 UTC
Captured 2026-09-30 17:59:41 UTC
Updated capture · M4.7 · 56.776 km deep · 5 nearby records
Source updated 2026-09-30 14:20:29 UTC
Captured 2026-09-30 18:59:45 UTC
Updated capture · M4.7 · 56.776 km deep · 5 nearby records
Source updated 2026-09-30 14:20:29 UTC
Captured 2026-09-30 20:14:40 UTC
Updated capture · M4.7 · 56.776 km deep · 5 nearby records
Source updated 2026-09-30 14:20:29 UTC
Captured 2026-09-30 21:14:41 UTC
Updated capture · M4.7 · 56.776 km deep · 5 nearby records
Source updated 2026-09-30 14:20:29 UTC
Captured 2026-09-30 22:29:41 UTC
Updated capture · M4.7 · 56.776 km deep · 5 nearby records
Source updated 2026-09-30 14:20:29 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
30 September 2026 ↗29 September 2026 ↗SOURCE ID usgs:us6000tycv