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M5.1 Depth: 10.0 km

M5.1 Earthquake near 158 km SSE of Kokopo, Papua New Guinea

UTC time: 2025-08-28 04:31:38 UTC Local time: —

About this earthquake

A magnitude M5.1 earthquake was recorded near 158 km SSE of Kokopo, Papua New Guinea on August 28, 2025 at 04:31 UTC. 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 USGS.

Details

Magnitude
M5.1
Depth
10.0 km
UTC time
2025-08-28 04:31:38 UTC
Local time
—
Country
—
Source
usgs
Coordinates
-5.75170, 152.55140
Temperature
27.9°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
Kokopo159.7 kmN26'273
Port Moresby725.1 kmSW283'733

GeoNames · CC BY 4.0

Volcanoes nearby

  • Ulawun
    Distance: 156 km ·Stratovolcano ·Elevation: 2'334 m ·Last eruption: 2025 ·Papua New Guinea
  • Bamus
    Distance: 159 km ·Stratovolcano ·Elevation: 2'248 m ·Last eruption: 1886 ·Papua New Guinea
  • Hargy
    Distance: 167 km ·Stratovolcano ·Elevation: 1'148 m ·Last eruption: 950 ·Papua New Guinea
  • Rabaul
    Distance: 172 km ·Caldera ·Elevation: 688 m ·Last eruption: 2014 ·Papua New Guinea
  • Lolobau
    Distance: 180 km ·Caldera ·Elevation: 878 m ·Last eruption: 1912 ·Papua New Guinea
  • Sulu Range
    Distance: 180 km ·Stratovolcano(es) ·Elevation: 610 m ·Papua New Guinea

Subsequent earthquakes nearby

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

First 6 hours0
First 24 hours0
First 72 hours0
Strongest subsequent eventM6.1
M5.22025-09-04 09:38:35 UTC140.2 kmNew Ireland Region, Papua New Guinea M5.32025-09-04 09:38:41 UTC139.9 km149 km ESE of Kokopo, Papua New Guinea M5.32025-09-04 09:38:41 UTC132.3 kmNEW IRELAND REGION, P.N.G. M5.12025-09-04 09:38:48 UTC99.1 kmEvent of magnitude 5.1, near of Port Moresby (Monde) M6.02025-09-16 16:59:46 UTC139.0 kmNew Ireland Region, Papua New Guinea M6.02025-09-16 16:59:46 UTC124.2 kmEvent of magnitude 6.0, near of Port Moresby (Monde) M6.02025-09-16 16:59:51 UTC136.5 kmNEW IRELAND REGION, P.N.G. M6.12025-09-16 16:59:52 UTC143.6 kmPapua New Guinea [Sea] M4.62025-09-21 01:34:06 UTC44.2 kmNEW BRITAIN REGION, P.N.G.

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#14
Earlier events M≥4167
Earlier events M≥539
Compared since2025-01-01

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

Strongest earlier events

M6.92025-04-04 20:04:38 UTC123.3 km181 km ESE of Kimbe, Papua New Guinea M6.52025-04-04 20:04:39 UTC100.6 km194 km ESE of Kimbe, Papua New Guinea M6.22025-04-12 03:47:13 UTC138.0 km M6.12025-04-12 03:47:09 UTC135.5 km105 km ESE of Kokopo, Papua New Guinea M5.52025-04-12 03:47:24 UTC92.7 kmNew Ireland

Stats (last 24h)

Global (24h)
662
Country (24h)
—
—
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