10 Dec 2025, 10:18 UTC · Dec 10, 5:18 AM ET

M3.7 earthquake 78 km ESE of Nikolski, Alaska

A magnitude 3.7 earthquake struck 78 km ESE of Nikolski, Alaska at Dec 10, 5:18 AM ET, 35 km deep, minor – felt by people near the epicenter.

under 33–44–55–66+

Magnitude	3.7 mb
Time	10 Dec 2025, 10:18 UTC
Location	52.752°, -167.737° – 78 km ESE of Nikolski, Alaska
Depth	35.0 km
Felt reports	0
Max. estimated intensity (MMI)	1.9
USGS event	us7000rmlr

Within 100 km

Other earthquakes nearby this year

Mag.	Where	When (ET)	Depth	Felt
5.0	83 km SSW of Unalaska, Alaska	Jun 13, 6:38 AM 125 d ago	53 km	3 reports
5.0	54 km ENE of Nikolski, Alaska · tsunami flag	Nov 25, 12:16 PM 325 d ago	66 km	10 reports
4.8	73 km SSE of Nikolski, Alaska	Apr 23, 9:01 PM 176 d ago	32 km	–
4.4	63 km SSE of Nikolski, Alaska	Jun 1, 12:40 PM 137 d ago	37 km	–
4.4	43 km ESE of Nikolski, Alaska	Dec 11, 11:23 AM 309 d ago	35 km	–
4.1	85 km E of Nikolski, Alaska	Feb 12, 10:35 PM 246 d ago	35 km	–
4.0	85 km SSE of Nikolski, Alaska	Apr 23, 10:45 PM 176 d ago	26 km	–
4.0	81 km E of Nikolski, Alaska	Jan 6, 7:18 AM 283 d ago	42 km	–
4.0	31 km E of Nikolski, Alaska	Nov 5, 4:05 PM 345 d ago	56 km	–
3.9	56 km ENE of Nikolski, Alaska	Jan 2, 2:45 PM 287 d ago	62 km	–
3.9	40 km ESE of Nikolski, Alaska	Jan 2, 9:34 AM 287 d ago	44 km	–
3.8	105 km S of Unalaska, Alaska	Jan 24, 11:50 AM 265 d ago	43 km	–

FAQ

About this earthquake

How strong was the 78 km ESE of Nikolski, Alaska earthquake?

Magnitude 3.7 (mb), minor – felt by people near the epicenter. Depth 35 km. Strongest estimated shaking: intensity 1.9 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 M4.4.

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.