Region · live catalogue
Earthquakes in United States
In the last 30 days, 303 earthquakes of magnitude 2.5 or greater were recorded in United States; the largest was a magnitude 4.2 earthquake 123 km NE of Palmer, Alaska, United States on 10 Sep 2026.
Data: USGS · updated · sources and licences
- 24 hours
- 181
- all magnitudes
- 7 days
- 92
- M2.5+
- 30 days
- 303
- M2.5+
Last 24 hours
Earlier this week, magnitude 2.5 and above
Largest in the last 30 days
| Mag | Location | Time (UTC) |
|---|---|---|
| 4.2ml | 123 km NE of Palmer, Alaska, United States | |
| 4.1ml | 71 km SE of Hōlualoa, Hawaii, United States | |
| 4.0ml | 92 km NE of Palmer, Alaska, United States | |
| 4.0ml | 71 km SE of Hōlualoa, Hawaii, United States | |
| 3.9ml | Cantwell, Alaska | |
| 3.9ml | 135 km N of Tanaina, Alaska, United States | |
| 3.8mwr | 92 km ENE of Susanville, California, United States | |
| 3.8ml | 37 km NW of Green River, Wyoming, United States | |
| 3.8mw | 46 km SW of Fortuna, California, United States | |
| 3.8ml | 23 km ENE of West Side Highway, Washington, United States |
Where they occurred
Largest since 1900
Magnitude 6 and above in United States.
Loading the historical catalogue…
Questions
How many earthquakes happen in United States?
In the last 30 days, 303 earthquakes of magnitude 2.5 or greater were recorded in United States, 92 of them in the last 7 days. In the last 24 hours, 181 earthquakes of any magnitude were recorded. Most small earthquakes are not felt.
What was the largest recent earthquake in United States?
The largest in the last 30 days was a magnitude 4.2 earthquake 123 km NE of Palmer, Alaska, United States on 10 Sep 2026, at a depth of 16 km.
What is the largest earthquake recorded in United States since 1900?
According to the USGS catalogue, the largest was a magnitude 9.2 earthquake on 28 Mar 1964 (The 1964 Prince William Sound, Alaska Earthquake). Magnitudes of early 20th-century earthquakes are less certain than modern ones.
How deep are earthquakes in United States?
83% of the magnitude 2.5+ earthquakes recorded in United States in the last 30 days were shallower than 70 km. Shallow earthquakes generally cause stronger shaking at the surface than deep ones of the same magnitude.
Where can I get official earthquake information for United States?
For official information, warnings and safety advice, follow USGS Earthquake Hazards Program (https://earthquake.usgs.gov/) and your local civil protection authority. This site compiles agency reports and is not a warning service.
Can earthquakes be predicted?
No. Scientists can estimate how likely strong shaking is in a region over years or decades, but no method predicts the time, place and size of a specific earthquake. Aftershocks are expected after large earthquakes and become less frequent over time.