Earthquakes in Bonin Islands, Japan Region
Right now
The most recent data we hold from USGS arrived 6 minutes ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
Reported by USGS today.
It is the only one we have recorded within 20 km of this point since 13 September 2026.
What the source measured
USGS reported: Bonin Islands, Japan region
USGS recorded magnitude 4.9 at a depth of 10 km.
How we know
Confirmed by 2 independent sources, including USGS.
Our own score for this event is 8 out of 100, at 67 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Earthquakes |
| Severity | Low |
| Calamity Score (ours) | 8 / 100 |
| Our confidence | 67% |
| Coordinates | 26.3045, 142.2525 |
| Nearest City | Shimoda (984 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-13T03:50:32.298Z |
| Source | https://earthquake.usgs.gov/earthquakes/eventpage/us7000th3a |
Score Breakdown
Technical Details
| Mag | 4.9 |
| Depth | 10 |
| Tsunami | false |
| Sig | 369 |
| Emsc Mag | 4.9 |
| Emsc Depth | 2.7 |
| Emsc MagType | mb |
| Emsc Region | BONIN ISLANDS, JAPAN REGION |
| Emsc Auth | EMSC |
| Emsc SourceId | 2059627 |
| MergedSources | [{"id":"emsc_20260913_0000045","source":"emsc","severity":"low","severityValue":29.400000000000002,"timestamp":1789271430940,"latitude":26.3063,"longitude":142.4419}] |
Safety Information
If you feel shaking: Drop, Cover, and Hold On. Move away from windows, heavy objects, and exterior walls. After shaking stops, check for injuries and structural damage. Be prepared for aftershocks, which can occur minutes to months after the mainshock. Follow instructions from local emergency management authorities.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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