7 Dec 2025, 15:58 UTC · Dec 7, 10:58 AM ET

M4.3 earthquake 266 km W of Adak, Alaska

A magnitude 4.3 earthquake struck 266 km W of Adak, Alaska at Dec 7, 10:58 AM ET, 171 km deep, light – felt by most people nearby, rattling windows, rarely damage.

M4.0 Rat Islands, Aleutian Islands, AlaskaM4.0 230 km W of Adak, AlaskaM4.0 Rat Islands, Aleutian Islands, AlaskaM4.1 Rat Islands, Aleutian Islands, AlaskaM4.2 286 km W of Adak, AlaskaM4.2 200 km W of Adak, AlaskaM4.3 266 km W of Adak, AlaskaM4.3 Rat Islands, Aleutian Islands, AlaskaM4.3 299 km W of Adak, AlaskaM4.4 275 km W of Adak, AlaskaM4.7 225 km W of Adak, AlaskaM4.9 Rat Islands, Aleutian Islands, AlaskaM5.5 Rat Islands, Aleutian Islands, Alaska
under 33–44–55–66+
Magnitude4.3 mb
Time7 Dec 2025, 15:58 UTC
Location52.168°, 179.517° – 266 km W of Adak, Alaska
Depth171.4 km
Felt reports0
Max. estimated intensity (MMI)1.0
USGS eventus6000rt65
Within 100 km

Other earthquakes nearby this year

Mag.WhereWhen (ET)DepthFelt
5.5Rat Islands, Aleutian Islands, Alaska · PAGER greenDec 13, 5:51 AM
307 d ago
108 km–
4.9Rat Islands, Aleutian Islands, AlaskaFeb 14, 2:10 AM
245 d ago
117 km–
4.7225 km W of Adak, AlaskaFeb 19, 1:37 AM
240 d ago
127 km–
4.4275 km W of Adak, AlaskaOct 11, 8:16 AM
5 d ago
95 km–
4.3Rat Islands, Aleutian Islands, AlaskaNov 16, 4:01 PM
334 d ago
97 km–
4.3299 km W of Adak, AlaskaNov 14, 8:20 PM
336 d ago
200 km–
4.2286 km W of Adak, AlaskaSep 30, 3:10 PM
16 d ago
119 km–
4.2200 km W of Adak, AlaskaOct 4, 9:51 PM
377 d ago
79 km–
4.1Rat Islands, Aleutian Islands, AlaskaJul 29, 8:45 AM
79 d ago
136 km–
4.0Rat Islands, Aleutian Islands, AlaskaSep 10, 5:14 PM
36 d ago
98 km–
4.0230 km W of Adak, AlaskaMar 18, 12:57 PM
212 d ago
88 km–
4.0Rat Islands, Aleutian Islands, AlaskaNov 7, 10:04 PM
343 d ago
111 km–
FAQ

About this earthquake

How strong was the 266 km W of Adak, Alaska earthquake?

Magnitude 4.3 (mb), light – felt by most people nearby, rattling windows, rarely damage. Depth 171 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?

1 earthquakes within 100 km in the following two weeks are in our records, the strongest M5.5.

Earthquakes

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.

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