27 Dec 2025, 10:40 UTC · Dec 27, 5:40 AM ET · PAGER green

M5.6 earthquake 37 km NW of Añatuya, Argentina

A magnitude 5.6 earthquake struck 37 km NW of Añatuya, Argentina at Dec 27, 5:40 AM ET, 593 km deep, moderate – felt widely, some damage to weak buildings.

under 33–44–55–66+

Magnitude	5.6 mww
Time	27 Dec 2025, 10:40 UTC
Location	-28.256°, -63.134° – 37 km NW of Añatuya, Argentina
Depth	593.4 km
Felt reports	0
Max. estimated intensity (MMI)	1.7
PAGER alert	green
USGS event	us7000rl1p

Within 100 km

Other earthquakes nearby this year

Mag.	Where	When (ET)	Depth	Felt
4.4	40 km WNW of Colonia Dora, Argentina	Apr 23, 4:32 PM 176 d ago	571 km	–

FAQ

About this earthquake

How strong was the 37 km NW of Añatuya, Argentina earthquake?

Magnitude 5.6 (mww), moderate – felt widely, some damage to weak buildings. Depth 593 km. Strongest estimated shaking: intensity 1.7 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.