21 Aug 2026, 07:21 UTC · Aug 21, 3:21 AM ET
M3.4 earthquake 231 km ESE of Attu Station, Alaska
A magnitude 3.4 earthquake struck 231 km ESE of Attu Station, Alaska at Aug 21, 3:21 AM ET, 10 km deep, minor – felt by people near the epicenter.
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under 33–44–55–66+
| Magnitude | 3.4 ml |
| Time | 21 Aug 2026, 07:21 UTC |
| Location | 52.044°, 176.328° – 231 km ESE of Attu Station, Alaska |
| Depth | 10.0 km |
| Felt reports | 0 |
| USGS event | us6000tmlc |
Within 100 km
Other earthquakes nearby this year
| Mag. | Where | When (ET) | Depth | Felt |
|---|---|---|---|---|
| 6.4 | 223 km ESE of Attu Station, Alaska · tsunami flag · PAGER green | Mar 4, 12:54 PM 226 d ago | 10 km | – |
| 5.9 | 280 km ESE of Attu Station, Alaska · tsunami flag · PAGER green | Jan 15, 3:52 AM 274 d ago | 19 km | – |
| 5.8 | 233 km ESE of Attu Station, Alaska · PAGER green | May 6, 10:15 AM 163 d ago | 10 km | – |
| 5.7 | 231 km ESE of Attu Station, Alaska · tsunami flag · PAGER green | Mar 6, 4:08 PM 224 d ago | 8 km | 1 report |
| 5.4 | 227 km ESE of Attu Station, Alaska · tsunami flag · PAGER green | Mar 4, 8:26 AM 226 d ago | 10 km | – |
| 5.3 | 229 km ESE of Attu Station, Alaska | Mar 17, 12:21 PM 213 d ago | 10 km | – |
| 5.3 | 229 km ESE of Attu Station, Alaska · tsunami flag | Mar 3, 5:44 AM 227 d ago | 10 km | – |
| 5.3 | 227 km ESE of Attu Station, Alaska · tsunami flag | Mar 2, 6:46 PM 228 d ago | 10 km | – |
| 5.2 | 226 km ESE of Attu Station, Alaska | Mar 24, 4:59 PM 206 d ago | 10 km | – |
| 5.1 | 231 km ESE of Attu Station, Alaska | Aug 23, 7:20 PM 54 d ago | 15 km | 1 report |
| 5.1 | 233 km ESE of Attu Station, Alaska · tsunami flag | Mar 8, 6:41 PM 222 d ago | 4 km | – |
| 5.1 | 295 km ESE of Attu Station, Alaska · tsunami flag | Jan 23, 3:25 AM 266 d ago | 10 km | – |
FAQ
About this earthquake
How strong was the 231 km ESE of Attu Station, Alaska earthquake?
Magnitude 3.4 (ml), 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?
1 earthquakes within 100 km in the following two weeks are in our records, the strongest M5.1.
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.