M5.1 earthquake 40 km E of Adak, Alaska
A magnitude 5.1 earthquake struck 40 km E of Adak, Alaska at Feb 1, 7:43 AM ET, 62 km deep, moderate – felt widely, some damage to weak buildings. 1 people reported feeling it.
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| Magnitude | 5.1 mb |
| Time | 1 Feb 2026, 12:43 UTC |
| Location | 51.863°, -176.039° – 40 km E of Adak, Alaska |
| Depth | 61.8 km |
| Felt reports | 1 |
| Max. estimated intensity (MMI) | 4.0 |
| USGS event | us6000s5ul |
Other earthquakes nearby this year
| Mag. | Where | When (ET) | Depth | Felt |
|---|---|---|---|---|
| 5.5 | 67 km SSW of Adak, Alaska · PAGER green | Nov 23, 3:21 AM 328 d ago | 33 km | 3 reports |
| 5.3 | 39 km E of Adak, Alaska · tsunami flag | Jan 24, 4:25 PM 265 d ago | 61 km | 3 reports |
| 5.1 | 93 km SSE of Adak, Alaska | Jul 23, 9:03 PM 85 d ago | 10 km | – |
| 5.0 | 89 km SSW of Atka, Alaska | Feb 27, 12:17 AM 232 d ago | 34 km | – |
| 5.0 | 74 km NE of Adak, Alaska | Feb 10, 6:09 PM 248 d ago | 157 km | 1 report |
| 4.9 | 43 km E of Adak, Alaska | May 27, 8:25 PM 142 d ago | 64 km | 1 report |
| 4.9 | 57 km SSE of Adak, Alaska | Dec 15, 1:03 PM 305 d ago | 42 km | 6 reports |
| 4.9 | 47 km SE of Adak, Alaska | Oct 25, 6:13 AM 356 d ago | 57 km | 1 report |
| 4.9 | 71 km SSW of Adak, Alaska | Oct 20, 2:45 PM 361 d ago | 37 km | 2 reports |
| 4.5 | 82 km NNE of Adak, Alaska | Jul 7, 2:07 PM 101 d ago | 174 km | – |
| 4.5 | 92 km SSE of Adak, Alaska | Jun 4, 1:50 PM 134 d ago | 31 km | – |
| 4.5 | 27 km S of Adak, Alaska | Mar 24, 12:43 PM 206 d ago | 54 km | 1 report |
About this earthquake
How strong was the 40 km E of Adak, Alaska earthquake?
Magnitude 5.1 (mb), moderate – felt widely, some damage to weak buildings. Depth 62 km. Strongest estimated shaking: intensity 4.0 on the Modified Mercalli scale.
Was it felt?
1 people reported feeling it to the USGS "Did You Feel It?" survey; the highest reported intensity was 2.2.
Were there aftershocks?
1 earthquakes within 100 km in the following two weeks are in our records, the strongest M5.0.
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.