Shallow M5.5 Earthquake hit in the South Atlantic Ocean 289km from Ushuaia (Argentina) on Saturday Morning.

Written by Earthquakelist.org on June 7th, 2025. Last updated June 20th, 2025.

A shallow and significant M5.5 earthquake struck in the South Atlantic Ocean 289 kilometer from Ushuaia, Argentina in the morning of Saturday June 7th, 2025. Such earthquakes in regions like this usually have a minimal impact on people and the economy.

Earthquake Summary

This earthquake hit under water in the South Atlantic Ocean, 246 kilometers (153 mi) off the coast of Argentina, 289 kilometer south-southeast of Ushuaia in Tierra del Fuego. The center of this earthquake had a very shallow depth of 10 km. Shallow earthquakes usually have a larger impact than earthquakes deep in the earth.

Date and Time:	Jun 7, 2025 08:06 (Ushuaia Time) - Jun 7, 2025 11:06 Universal Time.
Location:	289 km SSE of Ushuaia, Tierra del Fuego, Argentina. Coordinates 57°14'50"S 66°42'4"W.
Map:	Map of area around epicenter. Click to open in Google Maps.
Magnitude:	MAG 5.5 Detected by 8 stations. Maximum Error Range ±0.11 .
Depth:	10 km (6 mi) A very shallow depth.
Max. Intensity:	IV Light On the Modified Mercalli Scale.
Tsunami Risk:	Low tsunami risk Earthquakes under MAG-6.5 do not usually cause tsunami's. Always stay cautious - More info here.

Minimal impact predicted

Based on scientific estimates by the US Geographic Survey (USGS), the risk of high fatalities for this earthquake is classified at level GREEN (low). They expect an 65% likelyhood of between 0 and 1 fatalities, and a 96% chance that the number of fatalities falls no higher than 10.

The USGS classifies the economic impact of this earthquake at level GREEN (low). They expect an 65% likelyhood of between 0 and 1 million US Dollars in economic damage and impact, and a 96% chance that the economic impact of this earthquake falls no higher than 10 million USD.

Not many people felt this earthquake

This earthquake may have been felt by around 40 people. That is the expected population size of the area exposed to a level of shaking of II or higher on the Modified Mercalli scale according to the USGS.

An estimated 30 people were exposed to level III. At this level, weak shaking and probably no damage can be expected.

People in 2 countries have been exposed to shaking. In Chile , around 40 people, with impact levels up to III (weak shaking, probably no damage).

People	MMI Level	Shaking	Damage
0	I	Not noticable	None
10	II	Very weak	None
30	III	Weak	Probably none
0	IV	Light	Likely none
0	V	Moderate	Very light
0	VI	Strong	Light
0	VII	Very Strong	Moderate
0	VIII	Severe	Moderate to heavy
0	IX	Violent	Heavy
0	X	Extreme	Very heavy

Nearby towns and cities

This earthquake may have been felt in Argentina . Ushuaia in Tierra del Fuego, Argentina is the nearest significant place from the epicenter. The earthquake occurred 289 kilometer (180 mi) south-southeast of Ushuaia.

Overview of nearby places

Cities and Towns around the epicenter of this earthquake.
Distance	Place
289 km (180 mi) NNW from epicenter	Ushuaia Tierra del Fuego, Argentina.

Earthquake Intensity Map

The graph below overlays a map of the region around the epicenter with earthquake intensity data provided by the US Geographic Survey. The highest intensity level detected for this earthquake is III.

I Not felt

II Weak

III Weak

IV Light

V Moderate

VI Strong

VII Very Strong

VIII Severe

IX Violent

X Extreme

Earthquake Intensity Map based on Shakemap Data provided by USGS.

Shaking reported by 1 person

People that feel an earthquake may report their experience to the US Geographic Survey. Currently, 1 person has reported shaking in one place in Argentina.We keep updating this article as more ground reports become available. You may report that you felt this earthquake here.

Places with most reports:

Ushuaia, Tierra del Fuego, Argentina: 1 person.

Aftershocks detected

This main shock was followed by 1 smaller aftershock. At a distance of 77 km (48 mi) west of this earthquake, an aftershock struck 24 hrs later. It measured a magnitude of 4.4

This main shock was prefaced by 2 smaller foreshocks. A 3.6 magnitude earthquake hit 2 days earlier nearby.

Overview of foreshocks and aftershocks

Detected MAG2.5+ earthquakes within within 100km (62 mi), that occurred in the three days before and after the main shock.
Classification	Magnitude	When	Where
Foreshock	M 3.6	2 days earlier Jun 4, 2025 22:16 (Ushuaia Time)	44 km (27 mi) WSW from Main Shock.
Foreshock	M 3.5	57 mins earlier Jun 7, 2025 07:09 (Ushuaia Time)	63 km (39 mi) WNW from Main Shock.
Main Shock This Earthquake	M 5.5	Jun 7, 2025 08:06 (Ushuaia Time)	-
Aftershock	M 4.4	24 hrs later Jun 8, 2025 07:59 (Ushuaia Time)	77 km (48 mi) W from Main Shock.

More earthquakes coming?

Aftershocks are usually at least 1 order of magnitude less strong than main shocks. The more time passes, the smaller the chance and likely strength of any potential aftershocks.

It's always adviced to be cautious of the risk of a larger shock following any significant earthquake, however this risk is fairly small. There is a roughly 94 percent change that no larger main shock will follow in the days following this earthquake.

Read: How to Stay Safe during an Earthquake (cdc.gov).

Earthquakes like this are common in the region

Earthquakes of this strength occur quite regularly in the region. This is the strongest earthquake to hit since May 2nd, 2025, when a 6.4 magnitude earthquake hit 20 km (13 mi) further west-southwest. An even stronger magnitude 7.4 earthquake struck on May 2nd, 2025.

In total, 10 earthquakes with a magnitude of 5.5 or higher have been registered within 300km (186 mi) of this epicenter in the past 10 years. This comes down to an average of once every year.

Low tsunami risk

DISCLAIMER: We strongly suggest to closely monitor advice from local authorities with regards to tsunami risks. Our analysis is based on automatically collected data from external sources, and these might contain mistakes. In addition, earthquakes can cause landslides that may lead to a tsunami, or be a followed by another, potentially stonger, earthquake.

Based on early data it appears this earthquake was not strong enough (lower than MAG-6.5) to be likely to cause destructive tsunami's. However this earthquake appeared to have hit at a shallow depth under sea, so stay cautious and monitor advice from local authorities.

Tsunami Risk Factors

Factor	Under Sea?	MAG-6.5 or stronger?	Shallow depth?
Explanation	Almost all tsunami's are caused by earthquakes with their epicenter under sea or very near the sea. However stay cautious in coastal areas as earthquakes on land may cause landslides into sea, potentially still causing a local tsunami.	Under MAG 6.5: Very unlikely to cause a tsunami. MAG 6.5 to 7.5: Destructive tsunami's do occur, but are uncommon. Likely to observe small sea level changes. MAG 7.6+: Earthquakes with these magnitudes might produce destructive tsunami's.	Most destructive tsunami's are caused by shallow earthquakes with a depth between 0 and 100km under the surface of the earth. Deeper tsunami's are unlikely to displace to ocean floor.
This Earthquake	This earthquake appears to have struck under the sea.	Not this earthquake. This earthquake had a magnitude of 5.5. Earthquakes of this strength are unlikely to trigger a tsunami.	This earthquake occurred at a depth of of 10 km (6 mi). Earthquakes this shallow could trigger a tsunami.

Sources

Last updated 20/06/25 12:28 (). This article is automatically generated based on available data. We keep checking multiple sources for additional information. This article gets updated as new details on this earthquake become available.