Reported by GFZ 172 days ago.
It is one of only 3 we have recorded within 20 km of this point since 16 March 2026.
What the source measured
GFZ reported: Near South Coast of Honshu, Japan
GFZ recorded magnitude 4.9 at a depth of 127 km.
The seismic region given by the source is Near South Coast of Honshu, Japan.
Nearby, since 16 March 2026
- March 16, 2026 · score 5 · 6.3 km
- March 16, 2026 · score 3 · 14.7 km
How we know
Confirmed by 3 independent sources, including GFZ.
Our own score for this event is 8 out of 100, at 73 % 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) | 8 / 100 |
| Our confidence | 73% |
| Coordinates | 34.7650, 139.3450 |
| Timestamp | 2026-03-16T10:37:49.770Z |
| Source | https://geofon.gfz-potsdam.de/eqinfo/event.php?id=gfz2026fgcg |
Score Breakdown
Technical Details
| Mag | 4.87 |
| Depth | 127.2 |
| MagType | mb |
| Region | Near South Coast of Honshu, Japan |
| Isc Mag | 4.8 |
| Isc Depth | 120 |
| Isc MagType | MB |
| Isc Region | Near south coast of eastern Honshu |
| Iris Mag | 4.6 |
| Iris Depth | 121.97 |
| Iris MagType | mb |
| Iris Region | NEAR S. COAST OF HONSHU, JAPAN |
| MergedSources | [{"id":"isc_645513795","source":"isc","severity":"low","severityValue":28.799999999999997,"timestamp":1773657469800,"latitude":35.01,"longitude":139.47},{"id":"iris_12082873","source":"iris","severity":"low","severityValue":27.599999999999998,"timestamp":1773657469000,"latitude":34.7732,"longitude":139.4133}] |
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.
Want to know when something happens in this area?
Calamity.live data shows a earthquake event with CalamityScore 8/100, in Near South Coast of Honshu, Japan (Japan), based on data from gfz. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.