21 Nov 2025, 04:03 UTC · Nov 20, 11:03 PM ET

M3.1 earthquake 150 km SE of Old Harbor, Alaska

A magnitude 3.1 earthquake struck 150 km SE of Old Harbor, Alaska at Nov 20, 11:03 PM ET, 10 km deep, minor – felt by people near the epicenter.

under 33–44–55–66+

Magnitude	3.1 ml
Time	21 Nov 2025, 04:03 UTC
Location	56.169°, -151.730° – 150 km SE of Old Harbor, Alaska
Depth	10.0 km
Felt reports	0
USGS event	ak2025wxbjba

Within 100 km

Other earthquakes nearby this year

Mag.	Where	When (ET)	Depth	Felt
4.3	104 km SSE of Akhiok, Alaska	Jul 18, 3:20 AM 91 d ago	37 km	–
4.0	102 km SSE of Akhiok, Alaska	Jul 18, 6:00 AM 90 d ago	24 km	–
3.9	120 km SSE of Akhiok, Alaska	Feb 8, 3:45 PM 250 d ago	8 km	–
3.9	122 km SSE of Akhiok, Alaska	Feb 8, 3:37 PM 250 d ago	11 km	–
3.8	120 km SSE of Akhiok, Alaska	Feb 8, 3:36 PM 250 d ago	7 km	–
3.7	124 km SSE of Akhiok, Alaska	Feb 8, 9:17 PM 250 d ago	39 km	–
3.4	51 km SSE of Old Harbor, Alaska	Mar 13, 8:03 PM 217 d ago	22 km	–
3.4	121 km SSE of Akhiok, Alaska	Feb 8, 3:47 PM 250 d ago	6 km	–
3.3	122 km SSE of Akhiok, Alaska	Feb 8, 9:24 PM 250 d ago	34 km	–
3.3	95 km SSE of Old Harbor, Alaska	Jan 30, 8:11 PM 259 d ago	20 km	–
3.3	108 km SE of Old Harbor, Alaska	Jan 13, 11:58 AM 276 d ago	5 km	–
3.2	211 km SSE of Old Harbor, Alaska	Sep 23, 5:19 AM 23 d ago	5 km	–

FAQ

About this earthquake

How strong was the 150 km SE of Old Harbor, Alaska earthquake?

Magnitude 3.1 (ml), minor – felt by people near the epicenter. Depth 10 km.

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.