Right now
The most recent data we hold from ISC arrived 2 hours ago, and this point is in it.
2 other detections within 20 km in the last 24 hours, the nearest <1 km from here.
Reported by ISC today.
It is one of only 3 we have recorded within 20 km of this point since 13 September 2026.
What the source measured
ISC reported: Hokkaido region
ISC recorded magnitude 4.7 at a depth of 120 km.
The seismic region given by the source is Hokkaido region.
An estimated 6,804 people live within 30 km of this point.
Nearby, since 13 September 2026
- September 13, 2026 · score 22 · 5.3 km
How we know
One source: ISC. Not yet confirmed by a second, independent source.
Our own score for this event is 14 out of 100, at 78 % 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) | 14 / 100 |
| Our confidence | 78% |
| Coordinates | 41.5130, 141.2720 |
| Nearest City | Mutsu (25 km) |
| Population Exposed | 6.8K within 30 km |
| Impact Tier | minor |
| Timestamp | 2026-09-13T06:31:15.000Z |
| Source | http://www.isc.ac.uk/cgi-bin/web-db-run?event_id=646395075&out_format=IMS1.0&request=COMPREHENSIVE |
Score Breakdown
Technical Details
| Mag | 4.7 |
| Depth | 120 |
| MagType | M |
| Region | Hokkaido region |
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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