M3.1
Depth:
21.0 km
M3.1 Earthquake near BIAK REGION, INDONESIA (Indonesia)
About this earthquake
A magnitude M3.1 earthquake was recorded near BIAK REGION, INDONESIA (Indonesia) on December 6, 2025 at 21:14 UTC. The hypocenter lay relatively close to the surface at around 21 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.
The event was recorded by EMSC. Indonesia: over the past 24 hours, QuakeMap24 logged 57 earthquakes, the strongest at M4.7.
Map
Depth profile
Shallow
21 km
21 km — shallower than the regional average (49.6 km)
Regional average: 49.6 km
Why depth matters
Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.
Depth classes per USGS
Historic earthquake map · Indonesia
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Country statistics · Indonesia
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Stats (last 24h)
Global (24h)
593
Country (24h)
Indonesia
57
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