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.
The corrected story: Magnitude 6.3 earthquake strikes at sea northwest of Port-Olry, Vanuatu.
USGS's PAGER alert for the quake is green, its lowest level.
The U.S. Geological Survey issued a yellow alert, the second of four levels, in its estimate of losses.
The U.S. Geological Survey located the quake 76 km northeast of Ozernovskiy at an intermediate depth of 143 km.
Oct. 15, 2026 — An earlier version gave the larger quake's magnitude as 6.9; the U.S. Geological Survey had revised it to 6.8 before publication.
The corrected story: Two strong earthquakes, magnitudes 6.7 and 6.8, strike the remote central Mid-Atlantic Ridge.
The U.S. Geological Survey located both quakes near the equator, far from any coast, hours apart.
USGS located the quake 18 km west of Río Grande at 10 km depth.