Earthquakes / EVENT RECORD
M 4.8 - 191 km SE of Petropavlovsk-Kamchatsky, Russia
USGS · Every measurement below belongs to the selected record.
Read the source-series history ↗Around the epicentre
Regional view · markers are locations, not affected areas
Magnitude
M 4.8
Scale: mb
Depth
10 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 4.8 earthquake in 191 km SE of Petropavlovsk-Kamchatsky, Russia, at a depth of 10 km.
Detailed source data captured 2026-10-09 19:59:53 UTC.
Measurements & confidence
- Event time (UTC)
- 2026-10-09 17:09:04.613 UTC
- Source updated (UTC)
- 2026-10-09 17:26:57.040 UTC
- Location
- 51.895°, 160.699°
- Stations used for location
- 58
- Horizontal error
- 7.75 km
- Depth error
- 1.826 km
- Magnitude error
- 0.066
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
10-02
10
10-03
7
10-04
0
10-05
0
10-06
0
10-07
2
10-08
0
10-09
2
Query window: 2026-10-02 17:09:04 to 2026-10-09 19:59:53 UTC. This is spatial proximity, not an identified aftershock sequence.
Magnitude
M 4.8
Scale: mb
Depth
10 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 4.8 earthquake in 191 km SE of Petropavlovsk-Kamchatsky, Russia, at a depth of 10 km.
Detailed source data captured 2026-10-09 18:44:53 UTC.
Measurements & confidence
- Event time (UTC)
- 2026-10-09 17:09:04.613 UTC
- Source updated (UTC)
- 2026-10-09 17:26:57.040 UTC
- Location
- 51.895°, 160.699°
- Stations used for location
- 58
- Horizontal error
- 7.75 km
- Depth error
- 1.826 km
- Magnitude error
- 0.066
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
10-02
10
10-03
7
10-04
0
10-05
0
10-06
0
10-07
2
10-08
0
10-09
2
Query window: 2026-10-02 17:09:04 to 2026-10-09 18:44:53 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 2026-10-09 17:29:54 UTC
First detailed capture · M4.8 · 10 km deep · 20 nearby records
Source updated 2026-10-09 17:26:57 UTC
Captured 2026-10-09 18:44:53 UTC
Updated capture · M4.8 · 10 km deep · 21 nearby records
Source updated 2026-10-09 17:26:57 UTC
Captured 2026-10-09 19:59:53 UTC
Updated capture · M4.8 · 10 km deep · 21 nearby records
Source updated 2026-10-09 17:26:57 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
9 October 2026 ↗SOURCE ID usgs:us6000u18e