Earthquakes / EVENT RECORD

M 5.6 - 74 km S of Yonakuni, Japan

USGS · Every measurement below belongs to the selected record.

View recordCaptured 2026-09-30 22:14:41 UTC

Around the epicentre

Regional view · markers are locations, not affected areas

● This earthquake ● Nearby recorded activityRegional map

Magnitude

M 5.6

Scale: mww

Depth

10.792 km

from location

Reported by people

Number of felt reports

USGS review

reviewed

Review does not imply final measurements

What the record tells us

USGS reports a magnitude 5.6 earthquake in 74 km S of Yonakuni, Japan, at a depth of 10.792 km.

Detailed source data captured 2026-09-30 22:14:41 UTC.

Measurements & confidence

Event time (UTC): 2026-09-30 05:00:24.971 UTC
Source updated (UTC): 2026-09-30 17:22:25.040 UTC
Location: 23.803°, 122.915°
Stations used for location: 94
Horizontal error: 4.11 km
Depth error: 4.148 km
Magnitude error: 0.062

Errors are the source’s reported uncertainty estimates, not guaranteed bounds. A depth marked “operator assigned” was fixed during analysis.

Shaking & impact

Instrumental intensity: 3.747 MMI
Felt-report intensity: 4.1 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.

Shaking map · available at USGS ↗

PAGER impact assessment · available at USGS ↗

Did You Feel It? reports · available at USGS ↗

Fault-motion solution · available at USGS ↗

USGS shaking intensity map for this earthquake — Official USGS ShakeMap product. Follow USGS for revisions.

Nearby seismic activity

Within 500 km · M2.5+ · seven days before the event through the latest query, up to seven days after

1 nearby records

09-23

09-24

09-25

09-26

09-27

09-28

09-29

09-30

Query window: 2026-09-23 05:00:24 to 2026-09-30 22:14:41 UTC. This is spatial proximity, not an identified aftershock sequence.

M4.636 km SE of Hualien City, Taiwan2026-09-28 18:20:44 UTC

113 km away · 19.011 km deep ↗

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 2026-09-30 05:22:14 UTC
First detailed capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 05:22:01 UTC
Captured 2026-09-30 05:37:14 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 05:32:08 UTC
Captured 2026-09-30 05:52:14 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 05:39:36 UTC
Captured 2026-09-30 06:37:14 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 06:33:11 UTC
Captured 2026-09-30 06:52:14 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 06:46:07 UTC
Captured 2026-09-30 07:07:14 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 07:05:15 UTC
Captured 2026-09-30 07:22:14 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 07:07:23 UTC
Captured 2026-09-30 07:37:14 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 07:27:13 UTC
Captured 2026-09-30 08:41:57 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 08:39:17 UTC
Captured 2026-09-30 09:41:57 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 08:39:17 UTC
Captured 2026-09-30 10:41:58 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 08:39:17 UTC
Captured 2026-09-30 11:41:59 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 08:39:17 UTC
Captured 2026-09-30 12:56:57 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 08:39:17 UTC
Captured 2026-09-30 14:14:40 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 08:39:17 UTC
Captured 2026-09-30 15:14:47 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 08:39:17 UTC
Captured 2026-09-30 16:29:40 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 08:39:17 UTC
Captured 2026-09-30 17:29:41 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 17:22:25 UTC
Captured 2026-09-30 18:44:40 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 17:22:25 UTC
Captured 2026-09-30 19:44:42 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 17:22:25 UTC
Captured 2026-09-30 20:59:42 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 17:22:25 UTC
Captured 2026-09-30 22:14:41 UTC
Updated capture · M5.6 · 10.792 km deep · 1 nearby records
Source updated 2026-09-30 17:22:25 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.

Read the original USGS record ↗

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 ↗

SOURCE ID usgs:us6000tyhk