3 Oct 2026, 21:25 UTC · Oct 3, 5:25 PM ET

M3.5 earthquake 66 km SE of Atka, Alaska

A magnitude 3.5 earthquake struck 66 km SE of Atka, Alaska at Oct 3, 5:25 PM ET, 35 km deep, minor – felt by people near the epicenter.

under 33–44–55–66+

Magnitude	3.5 ml
Time	3 Oct 2026, 21:25 UTC
Location	51.722°, -173.613° – 66 km SE of Atka, Alaska
Depth	35.0 km
Felt reports	0
Max. estimated intensity (MMI)	2.7
USGS event	us6000tzfa

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 82 d ago	12 km	–
5.1	79 km SE of Atka, Alaska	Dec 1, 5:21 PM 319 d ago	35 km	2 reports
5.0	89 km SSW of Atka, Alaska	Feb 27, 12:17 AM 232 d ago	34 km	–
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	–
4.5	76 km ESE of Atka, Alaska	Aug 8, 11:36 PM 69 d ago	52 km	1 report
4.5	86 km S of Atka, Alaska	Sep 25, 7:40 AM 386 d ago	16 km	–
4.4	121 km E of Atka, Alaska	Nov 30, 7:24 AM 320 d ago	73 km	–
4.3	87 km SSE of Atka, Alaska	Aug 4, 10:57 AM 73 d ago	33 km	–

FAQ

About this earthquake

How strong was the 66 km SE of Atka, Alaska earthquake?

Magnitude 3.5 (ml), minor – felt by people near the epicenter. Depth 35 km. Strongest estimated shaking: intensity 2.7 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.