Magnitude 6.3 earthquake strikes at sea northwest of Port-Olry, Vanuatu

Oct. 20, 2026 — A magnitude 6.3 earthquake struck at sea about 197 km northwest of Port-Olry, Vanuatu, at 04:20 UTC on Oct. 20, at a depth of about 16 km, the U.S. Geological Survey said. USGS's PAGER alert for the quake is green, its lowest level.

The wall: An early solution listed the quake as magnitude 6.6; local damage reports were not included.

Tier: Confirmed (based on the USGS event record (reviewed))

Corrections

• Corrected Oct. 22, 2026: An earlier version of this story gave the location as about 204 km west-northwest of Port-Olry and the depth as 10 km, from an early USGS solution. USGS's reviewed solution places the quake about 197 km northwest, at a depth of about 16 km.

Sources

• U.S. Geological Survey, M 6.3 - 197 km NW of Port-Olry, Vanuatu (event us6000u3jl)

earthquakes

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