18 Oct 2025, 14:08 UTC · Oct 18, 10:08 AM ET

M3.8 earthquake 176 km SSE of Atka, Alaska

A magnitude 3.8 earthquake struck 176 km SSE of Atka, Alaska at Oct 18, 10:08 AM ET, 10 km deep, minor – felt by people near the epicenter.

under 33–44–55–66+

Magnitude	3.8 mb
Time	18 Oct 2025, 14:08 UTC
Location	50.818°, -172.947° – 176 km SSE of Atka, Alaska
Depth	10.0 km
Felt reports	0
Max. estimated intensity (MMI)	2.2
USGS event	us6000ri2i

Within 100 km

Other earthquakes nearby this year

Mag.	Where	When (ET)	Depth	Felt
5.8	103 km SE of Atka, Alaska · PAGER green	Jul 26, 4:35 AM 83 d ago	12 km	–
5.1	79 km SE of Atka, Alaska	Dec 1, 5:21 PM 319 d ago	35 km	2 reports
4.9	86 km SSE of Atka, Alaska	Aug 1, 7:07 PM 76 d ago	35 km	–
4.9	102 km SE of Atka, Alaska	Jul 25, 5:03 PM 83 d ago	20 km	–
4.9	101 km SE of Atka, Alaska	Jul 23, 5:30 AM 85 d ago	35 km	–
4.6	89 km SE of Atka, Alaska	Aug 2, 1:18 AM 76 d ago	40 km	–
4.6	98 km SE of Atka, Alaska	Jul 23, 2:51 AM 86 d ago	43 km	–
4.6	188 km SSE of Atka, Alaska	Apr 12, 4:41 PM 187 d ago	10 km	–
4.3	87 km SSE of Atka, Alaska	Aug 4, 10:57 AM 73 d ago	33 km	–
4.3	85 km SE of Atka, Alaska	Jul 26, 9:18 AM 82 d ago	39 km	–
4.1	82 km SE of Atka, Alaska · PAGER green	Jul 25, 9:57 PM 83 d ago	46 km	–
4.1	84 km SE of Atka, Alaska	Jan 14, 4:15 PM 275 d ago	32 km	–

FAQ

About this earthquake

How strong was the 176 km SSE of Atka, Alaska earthquake?

Magnitude 3.8 (mb), minor – felt by people near the epicenter. Depth 10 km. Strongest estimated shaking: intensity 2.2 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.

Earthquakes

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.