Earthquakes in the United States — October 2026

36 earthquakes were recorded in the United States during October 2026, an average of 1.2 per day.

0 reached magnitude 4 or above and 0 reached magnitude 5 or above. The average focal depth was 24 km.

The month's largest event in the United States was a magnitude 3.1 earthquake near Anza, United States on 01 October 2026 at 00:01 UTC. A magnitude 3.1 earthquake radiates roughly 629 kg of TNT equivalent in seismic energy.

That is below the the United States monthly average of 6939 events over the period we cover — a comparatively quiet month, and down from the 7326 recorded the previous month.

83% of events here are shallow (under 70 km), 17% intermediate (70–300 km) and 0% deep-focus (over 300 km). The mix is dominated by shallow crustal events, with a minority of intermediate-depth activity.

By band, the catalogue holds 13 in the magnitude 0 range, 18 in the magnitude 1 range, 4 in the magnitude 2 range, 1 in the magnitude 3 range.

Activity peaked on 01 October, when 36 events were recorded.

The month's largest events were M3.1 near Anza, United States on 01 October at 5 km; M2.2 near Petersville, United States on 01 October at 90 km; M2.2 near Pedro Bay, United States on 01 October at 129 km.

That is 99% below the 6939 events the United States averages per month across the 23 months on record.