20 Dec 2025, 06:57 UTC · Dec 20, 1:57 AM ET · PAGER green

M5.6 earthquake Balleny Islands region

A magnitude 5.6 earthquake struck Balleny Islands region at Dec 20, 1:57 AM ET, 10 km deep, moderate – felt widely, some damage to weak buildings.

under 33–44–55–66+

Magnitude	5.6 mww
Time	20 Dec 2025, 06:57 UTC
Location	-63.809°, 172.771° – Balleny Islands region
Depth	10.0 km
Felt reports	0
Max. estimated intensity (MMI)	0.0
PAGER alert	green
USGS event	us6000rw5u

Within 100 km

Other earthquakes nearby this year

Mag.	Where	When (ET)	Depth	Felt
5.3	Balleny Islands region	Dec 20, 5:25 AM 300 d ago	10 km	–
5.2	Balleny Islands region	Sep 30, 3:07 AM 17 d ago	10 km	–
4.6	Balleny Islands region	Dec 19, 9:50 AM 301 d ago	10 km	–
4.5	Balleny Islands region	Jan 8, 11:05 PM 281 d ago	10 km	–
4.5	Balleny Islands region	Dec 20, 3:50 PM 300 d ago	11 km	–
4.5	Balleny Islands region	Dec 19, 8:51 AM 301 d ago	10 km	–
4.3	Balleny Islands region	Dec 20, 11:20 AM 300 d ago	10 km	–

FAQ

About this earthquake

How strong was the Balleny Islands region earthquake?

Magnitude 5.6 (mww), moderate – felt widely, some damage to weak buildings. Depth 10 km.

Was it felt?

No felt reports have been submitted to the USGS so far.

Were there aftershocks?

3 earthquakes within 100 km in the following two weeks are in our records, the strongest M5.3.

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.