M3.8 earthquake 29 km E of Atlantic City, Wyoming
A magnitude 3.8 earthquake struck 29 km E of Atlantic City, Wyoming at Dec 12, 7:38 PM ET, 10 km deep, minor – felt by people near the epicenter. 50 people reported feeling it.
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| Magnitude | 3.8 ml |
| Time | 13 Dec 2025, 00:38 UTC |
| Location | 42.539°, -108.380° – 29 km E of Atlantic City, Wyoming |
| Depth | 10.5 km |
| Felt reports | 50 |
| Max. estimated intensity (MMI) | 4.5 |
| USGS event | us6000rukk |
Other earthquakes nearby this year
| Mag. | Where | When (ET) | Depth | Felt |
|---|---|---|---|---|
| 2.9 | 25 km SW of Fort Washakie, Wyoming | Sep 28, 6:08 AM 383 d ago | 6 km | – |
| 2.5 | 29 km ENE of Atlantic City, Wyoming | Dec 10, 9:33 PM 310 d ago | 10 km | – |
About this earthquake
How strong was the 29 km E of Atlantic City, Wyoming earthquake?
Magnitude 3.8 (ml), minor – felt by people near the epicenter. Depth 10 km. Strongest estimated shaking: intensity 4.5 on the Modified Mercalli scale.
Was it felt?
50 people reported feeling it to the USGS "Did You Feel It?" survey; the highest reported intensity was 3.7.
Were there aftershocks?
No earthquakes within 100 km have followed so far in our records.
More
Source: U.S. Geological Survey (USGS) earthquake catalog, real-time feeds and FDSN event service; magnitudes and locations are revised by seismologists for hours after an event. Times are Eastern (ET) unless marked UTC. Not an alert service: for warnings follow local authorities and tsunami centers.