Observed earthquake
2011 Great Tohoku Earthquake, Japan
Recent observationReported by 1 agency. Every solution below is that agency's own measurement, stored unaltered.
Magnitude
9.1mww
Depth
29 km
shallow
Origin time
2011-03-11 05:46:24 UTC
15 y ago
Epicentre
38.30°N, 142.37°E
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 | M9.1 mww | 29 km | 2011-03-11 05:46:24 UTC | 38.30°N, 142.37°E | Reviewed by an analyst541 stations | official20110311054624120_30 ↗ |
Source: Earthquake data courtesy of the U.S. Geological Survey. · Retrieved: 2026-09-21 15:49:54 UTC
Felt reports
1,459 people submitted a felt report to United States Geological Survey · community intensity estimate 9.1 · instrumental intensity estimate 8.18.
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.