28 Sept 2025, 20:31 UTC · Sep 28, 4:31 PM ET
M3.8 earthquake 103 km S of Adak, Alaska
A magnitude 3.8 earthquake struck 103 km S of Adak, Alaska at Sep 28, 4:31 PM ET, 10 km deep, minor – felt by people near the epicenter.
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under 33–44–55–66+
| Magnitude | 3.8 mb |
| Time | 28 Sept 2025, 20:31 UTC |
| Location | 50.959°, -176.904° – 103 km S of Adak, Alaska |
| Depth | 10.0 km |
| Felt reports | 0 |
| USGS event | us6000rdhj |
Within 100 km
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 |
| 5.5 | 122 km SW of Adak, Alaska · tsunami flag · PAGER green | Sep 21, 5:30 AM 390 d ago | 30 km | 4 reports |
| 5.1 | 93 km SSE of Adak, Alaska | Jul 23, 9:03 PM 85 d ago | 10 km | – |
| 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 |
| 4.6 | 137 km SW of Adak, Alaska | Feb 17, 6:12 PM 241 d ago | 10 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 |
| 4.3 | 122 km SW of Adak, Alaska | Jul 11, 2:41 AM 98 d ago | 35 km | – |
| 4.3 | 124 km SW of Adak, Alaska | Nov 21, 1:49 PM 329 d ago | 46 km | – |
| 4.2 | 167 km S of Adak, Alaska | Oct 10, 8:30 AM 6 d ago | 10 km | – |
FAQ
About this earthquake
How strong was the 103 km S of Adak, Alaska earthquake?
Magnitude 3.8 (mb), minor – felt by people near the epicenter. Depth 10 km.
Was it felt?
No felt reports have been submitted to the USGS so far.
Were there aftershocks?
No earthquakes within 100 km have followed so far in our records.
Earthquakes
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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.