M 6.6 - 129 km S of Honchō, Japan

December 8, 2025 at 21:52:41 UTC

Depth: 19.00 km (Shallow)

M 6.6

Strong

Green

PAGER Alert

No

Tsunami

4

Felt Reports

Event Details

Magnitude6.6 mww
Depth19.00 km (Shallow)
Location40.9761N, 143.1504E
Community IntensityIII (Weak)
Mercalli IntensityIV (Light)
Felt Reports (DYFI)4 people
Alert Level (PAGER)Green — No fatalities or damage expected
Tsunami WarningNo
Significance672 / 3000
StatusReviewed
Networkus
USGS Event PageView 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.