M4.3 earthquake 187 km WNW of Attu Station, Alaska
A magnitude 4.3 earthquake struck 187 km WNW of Attu Station, Alaska at Oct 18, 9:07 AM ET, 35 km deep, light – felt by most people nearby, rattling windows, rarely damage.
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| Magnitude | 4.3 mb |
| Time | 18 Oct 2025, 13:07 UTC |
| Location | 53.421°, 170.553° – 187 km WNW of Attu Station, Alaska |
| Depth | 35.0 km |
| Felt reports | 0 |
| Max. estimated intensity (MMI) | 1.0 |
| USGS event | us6000ri19 |
Other earthquakes nearby this year
| Mag. | Where | When (ET) | Depth | Felt |
|---|---|---|---|---|
| 4.5 | 151 km W of Attu Station, Alaska | Mar 22, 8:04 AM 208 d ago | 10 km | – |
| 4.2 | 124 km WNW of Attu Station, Alaska | Oct 14, 10:10 AM 367 d ago | 44 km | – |
| 4.0 | 150 km W of Attu Station, Alaska | Jul 4, 12:32 AM 105 d ago | 10 km | – |
| 3.9 | 167 km WNW of Attu Station, Alaska | Jul 1, 4:55 PM 107 d ago | 39 km | – |
| 3.9 | 204 km WNW of Attu Station, Alaska | May 31, 3:18 PM 138 d ago | 10 km | – |
| 3.7 | 131 km W of Attu Station, Alaska | Apr 25, 9:32 AM 174 d ago | 10 km | – |
About this earthquake
How strong was the 187 km WNW of Attu Station, Alaska earthquake?
Magnitude 4.3 (mb), light – felt by most people nearby, rattling windows, rarely damage. Depth 35 km. Strongest estimated shaking: intensity 1.0 on the Modified Mercalli scale.
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.
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.