M 4.2 - 73 km SW of Yonakuni, Japan
July 22, 2014 at 16:47:04 UTC
Depth: 42.23 km (Shallow)
Key Takeaway
This light earthquake (M4.2) occurred 11 years ago near 73 km SW of Yonakuni, Japan, at a depth of 42.23 km (shallow).
Light
PAGER Alert
Tsunami
Felt Reports
Event Details
| Magnitude | 4.2 mb |
| Depth | 42.23 km (Shallow) |
| Location | 23.9640N, 122.5306E |
| Tsunami Warning | No |
| Significance | 271 / 3000 |
| Status | Reviewed |
| Network | us |
| USGS Event Page | View on USGS → |
Frequently Asked Questions
What was the magnitude of this earthquake?
This earthquake had a magnitude of 4.2, classified as "Light". Light earthquakes produce noticeable shaking but rarely cause damage.
How deep was this earthquake?
This earthquake occurred at a depth of 42.23 km, classified as "Shallow". Shallow earthquakes tend to cause more damage at the surface because the energy has less distance to travel before reaching buildings and infrastructure.
Where exactly did this earthquake occur?
This earthquake occurred near 73 km SW of Yonakuni, Japan, at coordinates 23.9640N, 122.5306E. The location is determined by analyzing seismic wave arrival times at multiple monitoring stations.
Were there aftershocks associated with this event?
Aftershock data for this specific event can be explored by viewing nearby recent earthquakes listed below on this page. Aftershocks are smaller earthquakes that occur in the same area following a larger event, and they can continue for days, weeks, or even months depending on the original earthquake's magnitude.
What does the magnitude of this earthquake mean in practical terms?
A magnitude 4.2 earthquake is classified as "Light" — these are commonly felt by people indoors but rarely cause any significant damage.
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Data from the USGS Earthquake Hazards Program (ComCat). QuakeScan is not affiliated with the USGS. Event details may be updated as new data becomes available.