M5.4 Earthquake 130 km SSW of Kokopo, Papua New Guinea — February 28, 2026
2026-02-28 06:23:27 UTC (2026-02-28) · approx. 4:23 PM UTC+10 local
Maximum shaking intensity MMI 4.3 (moderate).
On February 28, 2026 at 06:23 UTC, a magnitude 5.4 shallow crustal earthquake struck 130 km SSW of Kokopo, Papua New Guinea, at a depth of 52.0 km and coordinates -5.4614°, 151.8908°. The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 137 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 449, placing it among routine seismic activity. The nearest populated place is Keravat (population 1,000).
Physical scale: An earthquake of magnitude 5.4 releases seismic energy equivalent to roughly 2 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 3.2 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Papua New Guinea, a region characterized by the collision and subduction of the Pacific, Australian, and Solomon Sea plates. View all earthquakes in Papua New Guinea.
Learn more: Magnitude scale · Aftershock sequences
Nearest Populated Places
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Population exposure (USGS PAGER)
Estimated population that experienced each level of shaking. Based on the USGS PAGER rapid impact assessment, which combines ShakeMap output with global population grids.
| Shaking intensity (MMI) | Description | Population exposed |
|---|---|---|
| MMI 3 | weak | 575,483 |
| MMI 4 | light | 52,869 |
Earthquake Details
151.8908°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.4 earthquake near Kokopo, Papua New Guinea?
The magnitude 5.4 earthquake that struck 130 km SSW of Kokopo, Papua New Guinea on February 28, 2026 at 06:23 UTC had a depth of 52.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -5.4614°, 151.8908°, which is 130 km SSW of Kokopo, Papua New Guinea. The nearest populated place is Keravat (population 1,000). View all earthquakes in Papua New Guinea.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.4 earthquakes can continue for days to weeks and gradually diminish over time.
Has Papua New Guinea had earthquakes this big before?
The largest recorded earthquake in Papua New Guinea was the M8.0 New Britain earthquake of July 18, 1971. Today's magnitude 5.4 event is significantly smaller than that historical record.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us7000s106). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, February 28, 2026). M5.4 Earthquake 130 km SSW of Kokopo, Papua New Guinea — February 28, 2026. Retrieved May 19, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000s106/