Earthquakes / EVENT RECORD
M 5.5 - 92 km NNW of Aleneva, Alaska
USGS · Every measurement below belongs to the selected record.
Around the epicentre
Regional view · markers are locations, not affected areas
Magnitude
M 5.5
Scale: ml
Depth
87.6 km
Source-reported depth
Reported by people
303
Number of felt reports
USGS review
reviewed
Review does not imply final measurements
What the record tells us
USGS reports a magnitude 5.5 earthquake in 92 km NNW of Aleneva, Alaska, at a depth of 87.6 km.
Detailed source data captured 2026-10-06 19:44:07 UTC.
Measurements & confidence
- Event time (UTC)
- 2026-10-06 18:34:31.760 UTC
- Source updated (UTC)
- 2026-10-06 19:40:43.794 UTC
- Location
- 58.802°, -153.609°
- Stations used for location
- 121
- Horizontal error
- 3.3 km
- Depth error
- 1.9601 km
- Magnitude error
- 0.1
Errors are the source’s reported uncertainty estimates, not guaranteed bounds. A depth marked “operator assigned” was fixed during analysis.
Shaking & impact
- Instrumental intensity
- 4.215 MMI
- Felt-report intensity
- 4.6 CDI
- PAGER impact alert
- green
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
09-29
0
09-30
2
10-01
7
10-02
1
10-03
5
10-04
6
10-05
6
10-06
2
Query window: 2026-09-29 18:34:31 to 2026-10-06 19:44:07 UTC. This is spatial proximity, not an identified aftershock sequence.
Magnitude
M 5.5
Scale: ml
Depth
87.6 km
Source-reported depth
Reported by people
297
Number of felt reports
USGS review
reviewed
Review does not imply final measurements
What the record tells us
USGS reports a magnitude 5.5 earthquake in 92 km NNW of Aleneva, Alaska, at a depth of 87.6 km.
Detailed source data captured 2026-10-06 19:29:09 UTC.
Measurements & confidence
- Event time (UTC)
- 2026-10-06 18:34:31.760 UTC
- Source updated (UTC)
- 2026-10-06 19:25:32.535 UTC
- Location
- 58.802°, -153.609°
- Stations used for location
- 121
- Horizontal error
- 3.3 km
- Depth error
- 1.9601 km
- Magnitude error
- 0.1
Errors are the source’s reported uncertainty estimates, not guaranteed bounds. A depth marked “operator assigned” was fixed during analysis.
Shaking & impact
- Instrumental intensity
- 4.215 MMI
- Felt-report intensity
- 4.6 CDI
- PAGER impact alert
- green
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
09-29
0
09-30
2
10-01
7
10-02
1
10-03
5
10-04
6
10-05
6
10-06
2
Query window: 2026-09-29 18:34:31 to 2026-10-06 19:29:09 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 2026-10-06 18:44:06 UTC
First detailed capture · M5.5 · 87.6 km deep · 29 nearby records
Source updated 2026-10-06 18:42:45 UTC
Captured 2026-10-06 18:59:06 UTC
Updated capture · M5.5 · 87.6 km deep · 29 nearby records
Source updated 2026-10-06 18:57:51 UTC
Captured 2026-10-06 19:14:07 UTC
Updated capture · M5.5 · 87.6 km deep · 29 nearby records
Source updated 2026-10-06 19:13:49 UTC
Captured 2026-10-06 19:29:09 UTC
Updated capture · M5.5 · 87.6 km deep · 29 nearby records
Source updated 2026-10-06 19:25:32 UTC
Captured 2026-10-06 19:44:07 UTC
Updated capture · M5.5 · 87.6 km deep · 29 nearby records
Source updated 2026-10-06 19:40:43 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
6 October 2026 ↗SOURCE ID usgs:aka2026tuxgky