Earthquake.now

M7.4 Earthquake near Ushuaia, Argentina — 02 May 2025

A major earthquake of magnitude 7.4 was recorded near Ushuaia, Argentina on , with an epicentre 219 km south of Ushuaia, at a focal depth of 10.0 km.

7.4 Major

Time (UTC): 2025-05-02 12:58:26

Time (your timezone): —

Magnitude: 7.4 (major)

Focal depth: 10.0 km (shallow)

Epicentre: -56.7817, -68.2085

Location: 219 km S of Ushuaia, Argentina

USGS link to NOAA tsunami information: Available

Review status: Reviewed

Source: USGS event page

How strong was this earthquake?

Major earthquakes cause serious damage across wide regions and are capable of destroying buildings that were not designed for seismic loading. Events at this size frequently trigger long aftershock sequences lasting months.

A magnitude 7.4 earthquake radiates roughly 1.9 million tons of TNT equivalent in seismic energy.

The USGS assigns this earthquake a significance score of 849, which meets the USGS threshold of more than 600 for its significant-earthquake list. The ranking combines magnitude with available Did You Feel It responses and PAGER alert level; it is not a direct measurement of damage.

What the magnitude scale actually measures →

Where was the epicentre?

The epicentre was located at -56.7817, -68.2085 — 219 km south of Ushuaia. The closest other recorded event was a magnitude 5.0 earthquake 15 km west-southwest of here on 24 May 2025.

Why the 10 km depth matters

At 10 km this was a shallow earthquake. Shallow events release their energy close to the surface, so for a given magnitude they produce noticeably stronger shaking — and more damage — than deeper ones. Roughly three quarters of all earthquakes worldwide occur at shallow depths.

This catalogue does not ingest eyewitness responses, so it cannot confirm where this earthquake was felt. Based on magnitude alone, an event this size can produce strong, widely felt shaking. Its shallow focus makes stronger surface shaking more likely than for a deeper event of the same magnitude.

Read more on how focal depth changes what you feel →

What does the tsunami information flag mean?

The USGS event record links to NOAA tsunami information because this was a large event in an oceanic region. That link flag does not mean a tsunami occurred or that a warning is active. Check tsunami.gov and instructions from your local authority for the current status of your coastline.

How earthquakes generate tsunamis, and what the alert levels mean →

Aftershocks and local seismic history

57 further earthquakes have been recorded within about 150 km of the epicentre in the seven days after this event, the largest of them magnitude 7.5.

82 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 7.5 event near Ushuaia on 02 May 2025. This M7.4 event released about 1.4 times less energy than that event.

How long aftershock sequences last, and how large they get →

Where this event sits in the record

This earthquake is part of the May 2025 worldwide record. Browse the full monthly archive to compare periods.

Nearest recorded earthquakes to this epicentre

Other magnitude 7 earthquakes worldwide

All magnitude 7 earthquakes →

Questions about this earthquake

How strong is a magnitude 7.4 earthquake?

Major earthquakes cause serious damage across wide regions and are capable of destroying buildings that were not designed for seismic loading. Events at this size frequently trigger long aftershock sequences lasting months. A magnitude 7.4 earthquake radiates roughly 1.9 million tons of TNT equivalent in seismic energy.

How deep was the earthquake near Ushuaia?

At 10 km this was a shallow earthquake. Shallow events release their energy close to the surface, so for a given magnitude they produce noticeably stronger shaking — and more damage — than deeper ones. Roughly three quarters of all earthquakes worldwide occur at shallow depths.

Was the M7.4 earthquake near Ushuaia felt?

This catalogue does not ingest eyewitness responses, so it cannot confirm where this earthquake was felt. Based on magnitude alone, an event this size can produce strong, widely felt shaking. Its shallow focus makes stronger surface shaking more likely than for a deeper event of the same magnitude.

What does the USGS tsunami field mean for this event?

The USGS event record links to NOAA tsunami information because this was a large event in an oceanic region. That link flag does not mean a tsunami occurred or that a warning is active. Check tsunami.gov and instructions from your local authority for the current status of your coastline.

Have there been aftershocks?

57 further earthquakes have been recorded within about 150 km of the epicentre in the seven days after this event, the largest of them magnitude 7.5.

How often do earthquakes happen near Ushuaia?

82 earthquakes of magnitude 4 or above have been logged within roughly 200 km of this epicentre in our catalogue. The strongest was a magnitude 7.5 event near Ushuaia on 02 May 2025. This M7.4 event released about 1.4 times less energy than that event.