20 Mar 2026, 06:46 UTC · Mar 20, 2:46 AM ET

M3.8 earthquake 187 km SSE of Atka, Alaska

A magnitude 3.8 earthquake struck 187 km SSE of Atka, Alaska at Mar 20, 2:46 AM ET, 11 km deep, minor – felt by people near the epicenter.

under 33–44–55–66+

Magnitude	3.8 mb
Time	20 Mar 2026, 06:46 UTC
Location	50.701°, -172.968° – 187 km SSE of Atka, Alaska
Depth	10.9 km
Felt reports	0
Max. estimated intensity (MMI)	1.4
USGS event	us6000shqs

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	–
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	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	–
4.0	92 km SE of Atka, Alaska	Jul 25, 7:31 PM 83 d ago	41 km	–
3.9	209 km SSE of Atka, Alaska	Oct 6, 10:22 AM 10 d ago	10 km	–
3.9	120 km SE of Atka, Alaska	Jul 27, 6:12 AM 81 d ago	10 km	–
3.9	96 km SE of Atka, Alaska	Jul 26, 11:18 AM 82 d ago	10 km	–
3.8	98 km SE of Atka, Alaska	Jul 26, 12:11 PM 82 d ago	10 km	–
3.8	98 km SE of Atka, Alaska	Jul 26, 12:06 PM 82 d ago	10 km	–

FAQ

About this earthquake

How strong was the 187 km SSE of Atka, Alaska earthquake?

Magnitude 3.8 (mb), minor – felt by people near the epicenter. Depth 11 km. Strongest estimated shaking: intensity 1.4 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.