Vanuatu earthquakes

M3.9 earthquake 98 km NW of Port-Olry, Vanuatu

A magnitude 3.9 earthquake struck 98 km NW of Port-Olry, Vanuatu on Sun, Dec 22, 1985, 3:03 AM GMT+11 (16:03 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.1 106 km NW of Port-Olry, Vanuatu. This one was a foreshock.

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The earthquake

Magnitude
3.9 (mb), minor
Local time
UTC
1985-12-21 16:03:12 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
14.350° S, 166.495° E
Region
Vanuatu
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Depth from
OPERATOR_ASSIGNED

Nearby

Within 100 km, magnitude 1.5 and up: 37 in the 60 days after this one and 57 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002p65. Read Tue, Sep 22, 2026, 7:34 AM UTC.