Earthquakes in the United States — Page 9

No events have been recorded in the United States in the past 30 days, of which 10 reached magnitude 4 or above, the point at which shaking becomes widely noticeable. The United States sits on the Pacific Ring of Fire, the belt of subduction zones responsible for roughly 90% of the world's earthquakes.

7,301 earthquakes have been recorded in the United States in our catalogue, 0 of them in the past 30 days.

The average magnitude is 1.3 and the average focal depth 12 km. 10 events reached magnitude 4 or above, but none reached magnitude 5.

The strongest earthquake recorded in the United States in this period was a magnitude 4.5 event near Cobb, United States on 02 January 2025, at a depth of 1 km. A magnitude 4.5 earthquake radiates roughly 91 tons of TNT equivalent in seismic energy.

Locations recording the most events include Geyserville (988), Yerington (413), Tyonek (411), Salt Flat (235), West Kenai Peninsula Borough (230).

96% of events here are shallow (under 70 km), 4% 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.

The deepest event on record here was a magnitude 1.1 earthquake at 250 km beneath West Kenai Peninsula Borough, United States on 16 January 2025.

By band, the catalogue holds 6 in the magnitude -2 range, 500 in the magnitude -1 range, 1862 in the magnitude 0 range, 3779 in the magnitude 1 range, 1050 in the magnitude 2 range, 94 in the magnitude 3 range.

The busiest single day was 02 January 2025, with 346 recorded events.

1 of these events carry a USGS link to NOAA tsunami information. That link flag does not mean a tsunami occurred or that a warning was issued.