Earthquakes in Samoa — October 2026

2 earthquakes were recorded in Samoa during October 2026, an average of 0.1 per day.

2 reached magnitude 4 or above and 1 reached magnitude 5 or above. The average focal depth was 13 km.

The month's largest event in Samoa was a magnitude 5.1 earthquake near Safotu, Samoa on 15 October 2026 at 03:36 UTC. A magnitude 5.1 earthquake radiates roughly 674 tons of TNT equivalent in seismic energy.

That is well above the Samoa monthly average of 1 events over the period we cover — an unusually active month.

100% of events here are shallow (under 70 km), 0% intermediate (70–300 km) and 0% deep-focus (over 300 km). Almost everything here is crustal. That is characteristic of transform faulting or continental deformation rather than subduction — and it means shaking at the surface is strong for the magnitudes involved.

By band, the catalogue holds 1 in the magnitude 4 range, 1 in the magnitude 5 range.

Activity peaked on 15 October, when 2 events were recorded.

The month's largest events were M5.1 near Safotu, Samoa on 15 October at 13 km; M4.8 near Safotu, Samoa on 15 October at 13 km.

That is 43% above the 1 events Samoa averages per month across the 5 months on record.