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M5.5 Depth: 10.0 km

M5.5 Earthquake near South of Tonga Islands

UTC time: 2025-08-23 00:10:54 UTC Local time: —
M5.5 earthquake near South of Tonga Islands on Aug 23, 2025 — map of epicenter and shaking intensity | QuakeMap24
M5.5 Earthquake near South of Tonga Islands · 2025-08-23 00:10:54 UTC

About this earthquake

A magnitude M5.5 earthquake was recorded near South of Tonga Islands on August 23, 2025 at 00:10 UTC. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Earthquakes of this magnitude can damage poorly built structures.

The data is provided by GFZ and cross-checked across seismological networks.

Details

Magnitude
M5.5
Depth
10.0 km
UTC time
2025-08-23 00:10:54 UTC
Local time
—
Country
—
Source
gfz
Coordinates
-24.70000, -175.55000
Temperature
18.5°C

Map

Depth profile

Depth profile Depth: 10 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 10 km
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

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation
Nuku'alofa397.8 kmN22'400

GeoNames · CC BY 4.0

Volcanoes nearby

  • Kermadec Arc at 24.8°S
    Distance: 149 km ·Stratovolcano ·Elevation: -385 m ·Tonga
  • Monowai
    Distance: 211 km ·Stratovolcano ·Elevation: -132 m ·Last eruption: 2014 ·New Zealand
  • Tofua Arc at 21.3°S
    Distance: 374 km ·Stratovolcano ·Elevation: -68 m ·Last eruption: 1932 ·Tonga
  • Tofua Arc at 21.1°S
    Distance: 395 km ·Stratovolcano ·Elevation: -65 m ·Tonga
  • Tofua Arc at 20.9°S
    Distance: 428 km ·Stratovolcano ·Elevation: -296 m ·Last eruption: 2017 ·Tonga
  • Hunga Tonga-Hunga Ha'apai
    Distance: 461 km ·Caldera ·Elevation: 114 m ·Last eruption: 2022 ·Tonga

Subsequent earthquakes nearby

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

First 6 hours4
First 24 hours4
First 72 hours4
Strongest subsequent eventM6.0
M5.52025-08-23 00:10:55 UTC35.5 kmsouth of Tonga M5.22025-08-23 00:10:56 UTC16.5 kmEvent of magnitude 5.2, near of Auckland (Monde) M6.02025-08-23 00:11:01 UTC53.5 kmSouth of Tonga Islands [Sea: Tonga] M5.02025-08-23 00:43:45 UTC46.5 kmSOUTH OF TONGA M5.22025-08-27 00:10:38 UTC21.2 kmsouth of Tonga M5.02025-09-03 22:56:13 UTC135.6 km246 km SSW of ‘Ohonua, Tonga M5.22025-09-05 01:27:38 UTC139.0 kmTonga Islands Region M5.02025-09-05 13:58:49 UTC145.5 kmSOUTH OF FIJI ISLANDS

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#6
Earlier events M≥435
Earlier events M≥522
Compared since2025-01-12

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

Strongest earlier events

M6.02025-02-07 10:26:59 UTC105.7 kmsouth of the Fiji Islands M5.72025-08-18 23:03:12 UTC49.3 kmSouth of Tonga Islands [Sea: Tonga] M5.72025-08-16 22:52:05 UTC60.1 kmSouth of Tonga Islands M5.62025-08-18 23:03:12 UTC50.3 kmSOUTH OF TONGA M5.62025-08-18 23:03:09 UTC49.6 kmSouth of Tonga Islands

Stats (last 24h)

Global (24h)
692
Country (24h)
—
—
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