M 6.6 - 129 km S of Honchō, Japan
December 8, 2025 at 21:52:41 UTC
Depth: 19.00 km (Shallow)
Strong
PAGER Alert
Tsunami
Felt Reports
Event Details
| Magnitude | 6.6 mww |
| Depth | 19.00 km (Shallow) |
| Location | 40.9761N, 143.1504E |
| Community Intensity | III (Weak) |
| Mercalli Intensity | IV (Light) |
| Felt Reports (DYFI) | 4 people |
| Alert Level (PAGER) | Green — No fatalities or damage expected |
| Tsunami Warning | No |
| Significance | 672 / 3000 |
| Status | Reviewed |
| Network | us |
| USGS Event Page | View on USGS → |
Frequently Asked Questions
What does magnitude 6.6 mean?
A magnitude 6.6 earthquake is classified as "Strong". Strong earthquakes can cause severe damage in areas several tens of miles across.
How deep was this earthquake?
This earthquake occurred at a depth of 19.00 km, classified as "Shallow". Shallow earthquakes tend to cause more damage at the surface.
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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.