Earthquakes in Japan — February 2025

37 earthquakes were recorded in Japan during February 2025, an average of 1.3 per day.

37 reached magnitude 4 or above and 3 reached magnitude 5 or above. The average focal depth was 101 km.

The month's largest event in Japan was a magnitude 5.8 earthquake near Shingū, Japan on 26 February 2025 at 05:53 UTC. A magnitude 5.8 earthquake radiates roughly 7,558 tons of TNT equivalent in seismic energy.

That is below the Japan monthly average of 57 events over the period we cover — a comparatively quiet month, and down from the 49 recorded the previous month.

51% of events here are shallow (under 70 km), 35% intermediate (70–300 km) and 14% deep-focus (over 300 km). That proportion of deep-focus events is the signature of a subduction zone: only a cold slab descending into the mantle stays brittle enough to rupture at those depths.

By band, the catalogue holds 34 in the magnitude 4 range, 3 in the magnitude 5 range.

Activity peaked on 23 February, when 6 events were recorded.

The month's largest events were M5.8 near Shingū, Japan on 26 February at 394 km; M5.4 near Tatsugō, Japan on 03 February at 36 km; M5.0 near Onagawa Chō, Japan on 12 February at 56 km.

That is 35% below the 57 events Japan averages per month across the 21 months on record.