Reported by EMSC 170 days ago.
It is one of only 4 we have recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
EMSC reported: EASTERN HONSHU, JAPAN
EMSC recorded magnitude 5.0 at a depth of -80 km.
The seismic region given by the source is EASTERN HONSHU, JAPAN.
An estimated 540,813 people live within 20 km of this point.
Nearby, since 15 March 2026
- March 15, 2026 · score 16 · 7.4 km
- March 15, 2026 · score 9 · 7.4 km
- March 15, 2026 · score 7 · 12.4 km
How we know
One source: EMSC. Not yet confirmed by a second, independent source.
Our own score for this event is 35 out of 100, at 85 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Earthquake |
| Severity | medium |
| Calamity Score (ours) | 35 / 100 |
| Our confidence | 85% |
| Coordinates | 36.3000, 139.4000 |
| Nearest City | Ōta (3 km) |
| Population Exposed | 540.8K within 20 km |
| Impact Tier | significant |
| Timestamp | 2026-03-15T05:06:30.000Z |
| Source | https://www.seismicportal.eu/eventdetail.html?unid=20260315_0000077 |
Score Breakdown
Technical Details
| Mag | 5 |
| Depth | -80 |
| MagType | mb |
| Region | EASTERN HONSHU, JAPAN |
| Auth | JMA |
| SourceId | 1960751 |
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.
Want to know when something happens near Ōta?
Calamity.live data shows a earthquake event with CalamityScore 35/100, near Ōta (Japan), based on data from emsc. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.