M5.5 Depth: 10.0 km

M5.5 Earthquake near Pacific-Antarctic Ridge

UTC time: 2025-08-03 04:57:10 UTC Local time: —

About this earthquake

On August 3, 2025 at 04:57 UTC, a magnitude M5.5 earthquake occurred near Pacific-Antarctic Ridge. With a focal depth of about 10 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude can damage poorly built structures.

The event was recorded by USP.

Details

Magnitude

M5.5

Depth

10.0 km

UTC time

2025-08-03 04:57:10 UTC

Local time

—

Country

—

Source

usp

Coordinates

-54.51486, -128.88893

Map

Depth profile

Shallow

10 km

Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Subsequent earthquakes nearby

Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.

First 6 hours3

First 24 hours3

First 72 hours3

Strongest subsequent eventM6.4

M6.42025-08-03 04:57:11 UTC84.5 kmPACIFIC-ANTARCTIC RIDGE M6.02025-08-03 04:57:12 UTC98.1 kmPacific-Antarctic Ridge M6.42025-08-03 04:57:31 UTC84.0 kmPacific-Antarctic Ridge M5.22025-08-06 17:32:59 UTC70.0 kmPacific-Antarctic Ridge

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#1

Earlier events M≥42

Earlier events M≥51

Compared since2025-03-30

The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.

Strongest earlier events

M5.22025-08-03 02:26:17 UTC131.7 kmPACIFIC-ANTARCTIC RIDGE M4.52025-03-30 11:48:45 UTC108.3 kmPacific-Antarctic Ridge

Stats (last 24h)

Global (24h)

666

Country (24h)

—

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