Reported by EMSC 112 days ago.
It is the 5th strongest of the 5 detections recorded within 20 km of this point since 10 March 2026. The last comparable one was on 10 March 2026.
What the source measured
EMSC reported: HOKKAIDO, JAPAN REGION
EMSC recorded magnitude 4.0 at a depth of -50 km.
The seismic region given by the source is HOKKAIDO, JAPAN REGION.
Nearby, since 10 March 2026
- May 19, 2026 · score 1 · 7.8 km
- May 19, 2026 · score 5 · 13.6 km
- March 10, 2026 · score 15 · 20.9 km
How we know
One source: EMSC. Not yet confirmed by a second, independent source.
Our own score for this event is 0 out of 100, at 65 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Earthquake |
| Severity | low |
| Calamity Score (ours) | 0 / 100 |
| Our confidence | 65% |
| Coordinates | 41.0000, 142.5000 |
| Timestamp | 2026-05-11T02:27:30.000Z |
| Source | https://www.seismicportal.eu/eventdetail.html?unid=20260511_0000042 |
Score Breakdown
Technical Details
| Mag | 4 |
| Depth | -50 |
| MagType | m |
| Region | HOKKAIDO, JAPAN REGION |
| Auth | JMA |
| SourceId | 1993021 |
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 10 February 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.
Calamity.live data shows a earthquake event with CalamityScore 0/100, in Hokkaido, Japan Region (Japan), based on data from emsc. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.