M3.6 earthquake 23 km NW of Old Harbor, Alaska
A magnitude 3.6 earthquake struck 23 km NW of Old Harbor, Alaska at Oct 29, 3:12 PM ET, 29 km deep, minor – felt by people near the epicenter.
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| Magnitude | 3.6 ml |
| Time | 29 Oct 2025, 19:12 UTC |
| Location | 57.325°, -153.628° – 23 km NW of Old Harbor, Alaska |
| Depth | 28.9 km |
| Felt reports | 0 |
| Max. estimated intensity (MMI) | 2.0 |
| USGS event | ak025dvromz5 |
Other earthquakes nearby this year
| Mag. | Where | When (ET) | Depth | Felt |
|---|---|---|---|---|
| 4.5 | 41 km SW of Karluk, Alaska | Aug 17, 4:35 PM 60 d ago | 58 km | 6 reports |
| 4.2 | 24 km SSW of Chiniak, Alaska | Apr 28, 10:36 PM 171 d ago | 48 km | 18 reports |
| 4.2 | 10 km N of Old Harbor, Alaska | Apr 23, 3:12 AM 177 d ago | 41 km | 38 reports |
| 4.0 | 18 km N of Larsen Bay, Alaska | Mar 24, 1:36 AM 207 d ago | 29 km | 3 reports |
| 3.8 | 34 km W of Aleneva, Alaska | Aug 23, 3:42 AM 55 d ago | 65 km | 4 reports |
| 3.7 | 37 km SW of Karluk, Alaska | Sep 22, 4:48 AM 25 d ago | 51 km | 1 report |
| 3.7 | 32 km SSW of Karluk, Alaska | Apr 8, 9:16 PM 191 d ago | 20 km | – |
| 3.5 | 13 km WNW of Larsen Bay, Alaska | Mar 13, 7:00 AM 217 d ago | 47 km | 1 report |
| 3.4 | 56 km W of Akhiok, Alaska | Oct 4, 9:38 AM 12 d ago | 65 km | – |
| 3.4 | 51 km SSE of Old Harbor, Alaska | Mar 13, 8:03 PM 217 d ago | 22 km | – |
| 3.3 | 35 km NW of Karluk, Alaska | Nov 9, 9:29 AM 341 d ago | 61 km | – |
| 3.2 | 39 km SSW of Karluk, Alaska | Aug 11, 10:28 AM 66 d ago | 44 km | – |
About this earthquake
How strong was the 23 km NW of Old Harbor, Alaska earthquake?
Magnitude 3.6 (ml), minor – felt by people near the epicenter. Depth 29 km. Strongest estimated shaking: intensity 2.0 on the Modified Mercalli scale.
Was it felt?
No felt reports have been submitted to the USGS so far.
Were there aftershocks?
1 earthquakes within 100 km in the following two weeks are in our records, the strongest M3.3.
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.