4.1

M4.1 Earthquake 39 km ESE of Aitape, Papua New GuineaFebruary 12, 2026

2026-02-12 21:59:16 UTC (2026-02-12) · approx. 7:59 AM UTC+10 local

MagnitudeM4.1(mb)
Time21:59 UTC7:59 AM UTC+10
Depth10.0 kmshallow crustal
Coordinates-3.296°, 142.668°
Felt byNo felt reports
Status✓ Reviewed by USGS

On February 12, 2026 at 21:59 UTC, a magnitude 4.1 shallow crustal earthquake struck 39 km ESE of Aitape, Papua New Guinea, at a depth of 10.0 km and coordinates -3.2955°, 142.6682°.

Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -3.30°, 142.67°

Earthquake Details

Magnitude
4.1 mb
Depth
10.0 km
shallow crustal
Location
-3.2955°N
142.6682°E

Technical Information

Event ID
us7000s0j9
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Stations Used
16
Azimuthal Gap
161.0°
Min Station Distance
2.110°
RMS Residual
0.50 sec
Last Updated
2026-05-06 17:53:48 UTC

Common Questions

How strong was the magnitude 4.1 earthquake near Aitape, Papua New Guinea?

The magnitude 4.1 earthquake that struck 39 km ESE of Aitape, Papua New Guinea on February 12, 2026 at 21:59 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.1 earthquakes can continue for several days and gradually diminish over time.

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: us7000s0j9). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, February 12, 2026). M4.1 Earthquake 39 km ESE of Aitape, Papua New GuineaFebruary 12, 2026. Retrieved May 13, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000s0j9/