Right now
Nothing else has been detected within 20 km in the last 24 hours.
Reported by IRIS 171 days ago.
It is one of only 3 we have recorded within 20 km of this point since 18 March 2026.
What the source measured
IRIS reported: NEAR EAST COAST OF HONSHU, JAPAN
IRIS recorded magnitude 4.7 at a depth of 64 km.
The seismic region given by the source is NEAR EAST COAST OF HONSHU, JAPAN.
Nearby, since 18 March 2026
- March 18, 2026 · score 6 · 0.0 km
- March 18, 2026 · score 3 · 9.4 km
How we know
One source: IRIS. Not yet confirmed by a second, independent source.
Our own score for this event is 6 out of 100, at 58 % 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) | 6 / 100 |
| Our confidence | 58% |
| Coordinates | 40.9524, 141.9080 |
| Timestamp | 2026-03-18T20:23:02.000Z |
| Source | https://ds.iris.edu/ds/nodes/dmc/tools/event/12083986 |
Score Breakdown
Technical Details
| Mag | 4.7 |
| Depth | 64.38 |
| MagType | mb |
| Region | NEAR EAST COAST OF HONSHU, JAPAN |
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 6/100, in Near East Coast of Honshu, Japan (Japan), based on data from iris. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.