Earthquakes in the United States — March 2025

7185 earthquakes were recorded in the United States during March 2025, an average of 231.8 per day.

62 reached magnitude 4 or above and 17 reached magnitude 5 or above. The average focal depth was 13 km.

The month's largest event in the United States was a magnitude 6.2 earthquake near Adak, United States on 21 March 2025 at 14:53 UTC. A magnitude 6.2 earthquake radiates roughly 30,089 tons of TNT equivalent in seismic energy.

That is close to the the United States monthly average of 7168 events over the period we cover, and down from the 7458 recorded the previous month.

95% of events here are shallow (under 70 km), 5% 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 13 in the magnitude -2 range, 462 in the magnitude -1 range, 2183 in the magnitude 0 range, 3449 in the magnitude 1 range, 873 in the magnitude 2 range, 143 in the magnitude 3 range.

Activity peaked on 04 March, when 310 events were recorded.

12 event(s) this month carry a USGS link to NOAA tsunami information; the flag does not indicate whether a tsunami occurred.

The month's largest events were M6.2 near Adak, United States on 21 March at 26 km; M6.1 near Adak, United States on 21 March at 74 km; M5.7 near Adak, United States on 21 March at 19 km.

That is close to the 7168 events the United States averages per month across the 21 months on record.