Observed earthquake
Bonin Islands, Japan region
Recent observationReported by 1 agency. Every solution below is that agency's own measurement, stored unaltered.
Magnitude
7.8mww
Depth
664 km
deep
Origin time
2015-05-30 11:23:02 UTC
11 y ago
Epicentre
27.84°N, 140.49°E
A reporting agency set the tsunami evaluation flag for this earthquake. That flag means the event met criteria for tsunami assessment — it is not itself a tsunami warning. Official tsunami warnings come only from your national tsunami warning centre.
Agency solutions
The same earthquake as measured independently by each agency. Values are never averaged or rewritten.
| Agency | Magnitude | Depth | Origin time | Epicentre | Review status | Source record |
|---|---|---|---|---|---|---|
| USGSUnited States Geological Survey | M7.8 mww | 664 km | 2015-05-30 11:23:02 UTC | 27.84°N, 140.49°E | Reviewed by an analyst | us20002ki3 ↗ |
Source: Earthquake data courtesy of the U.S. Geological Survey. · Retrieved: 2026-09-21 15:50:50 UTC
Felt reports
360 people submitted a felt report to United States Geological Survey · community intensity estimate 6 · instrumental intensity estimate 3.361.
Felt reports are crowd-sourced and reflect where people had internet access and chose to respond. They are not a complete map of who felt the earthquake.