■ Steady
M5.5 quake strikes off Vanuatu as a cluster of tremors continues northwest of Port-Olry
On Wednesday (UTC), a M5.5 earthquake at 10 km depth was recorded 221 km northwest of Port-Olry, Vanuatu, and two M5.1 and M5.2 quakes struck near Balangonan, Philippines. On Tuesday, a M5.8 quake hit 196 km northwest of Port-Olry, followed by several M5.0 to M5.2 quakes in the same area. Other M5.0 to M5.4 quakes were recorded near Guam, Tibet, Fiji, Panama, Tonga and Indonesia. USGS PAGER alerts were green where issued.
- Vanuatu: the M5.5 on Wednesday follows a M5.8 on Tuesday and at least six other M5.0 to M5.4 quakes 184 to 221 km northwest of Port-Olry since Sunday.
- Philippines: M5.1 (58 km depth) and M5.2 (46 km depth) quakes near Balangonan, with 6 and 1 felt reports.
- Earlier, a M6.1 at 116 km depth struck 25 km ENE of Port-Olry on Sunday, and a M5.9 hit 218 km ENE of Nagqu, China, the same day.
- Another M5.4 struck 210 km ENE of Nagqu, China, on Tuesday.
Updated 28 Oct 2026, 02:22 UTC · Written by Claude from the reports on this page and on the map. Check the linked sources for full details.