M4.2 earthquake 10 km N of Old Harbor, Alaska
A magnitude 4.2 earthquake struck 10 km N of Old Harbor, Alaska at Apr 23, 3:12 AM ET, 41 km deep, light – felt by most people nearby, rattling windows, rarely damage. 38 people reported feeling it.
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| Magnitude | 4.2 ml |
| Time | 23 Apr 2026, 07:12 UTC |
| Location | 57.293°, -153.279° – 10 km N of Old Harbor, Alaska |
| Depth | 40.5 km |
| Felt reports | 38 |
| Max. estimated intensity (MMI) | 3.5 |
| USGS event | aka2026hydrzg |
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 |
| 4.0 | 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 24 d ago | 51 km | 1 report |
| 3.7 | 32 km SSW of Karluk, Alaska | Apr 8, 9:16 PM 191 d ago | 20 km | – |
| 3.6 | 23 km NW of Old Harbor, Alaska | Oct 29, 3:12 PM 352 d ago | 29 km | – |
| 3.5 | 13 km WNW of Larsen Bay, Alaska | Mar 13, 7:00 AM 217 d ago | 47 km | 1 report |
| 3.4 | 51 km SSE of Old Harbor, Alaska | Mar 13, 8:03 PM 217 d ago | 22 km | – |
| 3.3 | 14 km NE of Kodiak, Alaska | Jan 7, 1:32 AM 283 d ago | 26 km | 24 reports |
| 3.2 | 39 km SSW of Karluk, Alaska | Aug 11, 10:28 AM 66 d ago | 44 km | – |
| 3.2 | 24 km ENE of Akhiok, Alaska | Jul 28, 11:03 AM 80 d ago | 38 km | – |
About this earthquake
How strong was the 10 km N of Old Harbor, Alaska earthquake?
Magnitude 4.2 (ml), light – felt by most people nearby, rattling windows, rarely damage. Depth 41 km. Strongest estimated shaking: intensity 3.5 on the Modified Mercalli scale.
Was it felt?
38 people reported feeling it to the USGS "Did You Feel It?" survey; the highest reported intensity was 3.8.
Were there aftershocks?
1 earthquakes within 100 km in the following two weeks are in our records, the strongest M4.2.
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.