Right now
The most recent data we hold from GFZ arrived 14 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
Reported by GFZ 12 days ago.
No stronger detection stands among the 9 recorded within 20 km of this point since 31 May 2026 — one other scored the same. The last comparable one was on 4 August 2026.
What the source measured
GFZ reported: Near East Coast of Honshu, Japan
GFZ recorded magnitude 5.0 at a depth of 57 km.
The seismic region given by the source is Near East Coast of Honshu, Japan.
Nearby, since 31 May 2026
- August 27, 2026 · score 7 · 2.0 km
- August 27, 2026 · score 7 · 2.0 km
- August 4, 2026 · score 4 · 5.2 km
How we know
Confirmed by 2 independent sources, including GFZ.
Our own score for this event is 16 out of 100, at 66 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Earthquakes |
| Severity | Low |
| Calamity Score (ours) | 16 / 100 |
| Our confidence | 66% |
| Coordinates | 40.6090, 142.2680 |
| Timestamp | 2026-08-27T17:54:40.910Z |
| Source | https://geofon.gfz-potsdam.de/eqinfo/event.php?id=gfz2026qujd |
Score Breakdown
Technical Details
| Mag | 4.97 |
| Depth | 57.4 |
| MagType | mb |
| Region | Near East Coast of Honshu, Japan |
| Isc Mag | 4.8 |
| Isc Depth | 63 |
| Isc MagType | M |
| Isc Region | Near east coast of eastern Honshu |
| MergedSources | [{"id":"isc_646256989","source":"isc","severity":"low","severityValue":28.799999999999997,"timestamp":1787853281000,"latitude":40.624,"longitude":142.255}] |
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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