4.1

M4.1 Earthquake 132 km NE of Alotau, Papua New GuineaFebruary 19, 2024

2024-02-19 17:28:18 UTC (2024-02-19) · approx. 3:28 AM UTC+10 local

MagnitudeM4.1(mb)
Time17:28 UTC3:28 AM UTC+10
Depth10.0 kmshallow crustal
Coordinates-9.640°, 151.452°
Felt byNo felt reports
Status✓ Reviewed by USGS

On February 19, 2024 at 17:28 UTC, a magnitude 4.1 shallow crustal earthquake struck 132 km NE of Alotau, Papua New Guinea, at a depth of 10.0 km and coordinates -9.6403°, 151.4515°.

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 -9.64°, 151.45°

Earthquake Details

Magnitude
4.1 mb
Depth
10.0 km
shallow crustal
Location
-9.6403°N
151.4515°E

Technical Information

Event ID
us7000m13z
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Stations Used
24
Azimuthal Gap
90.0°
Min Station Distance
5.459°
RMS Residual
0.29 sec
Last Updated
2024-05-02 15:50:13 UTC

Common Questions

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

The magnitude 4.1 earthquake that struck 132 km NE of Alotau, Papua New Guinea on February 19, 2024 at 17:28 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.

Understanding This Data

Magnitude 4.1 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000m13z). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, February 19, 2024). M4.1 Earthquake 132 km NE of Alotau, Papua New GuineaFebruary 19, 2024. Retrieved May 2, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000m13z/