4.2

M4.2 Earthquake 130 km WSW of Merizo Village, Guam — September 24, 2026

2026-09-24 22:39:25 UTC (2026-09-24) · approx. 8:39 AM UTC+10 local

MagnitudeM4.2(mb)
Time22:39 UTC≈ 8:39 AM UTC+10
Depth129.5 kmintermediate depth
Coordinates12.831°, 143.550°
Felt byNo felt reports
Status✓ Reviewed by USGS

On September 24, 2026 at 22:39 UTC, a magnitude 4.2 intermediate depth earthquake struck 130 km WSW of Merizo Village, Guam, at a depth of 129.5 km and coordinates 12.8311°, 143.5496°.

Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 12.83°, 143.55°

Earthquake Details

Magnitude
4.2 mb
Depth
129.5 km
intermediate depth
Location
12.8311°N
143.5496°E

Technical Information

Event ID
us6000tyvl
Event Type
earthquake
Status
✓ Reviewed
Significance
271
Stations Used
25
Azimuthal Gap
117.0°
Min Station Distance
1.489°
RMS Residual
0.45 sec
Last Updated
2026-10-11 03:29:52 UTC

Common Questions

How strong was the magnitude 4.2 earthquake near Merizo Village, Guam?

The magnitude 4.2 earthquake that struck 130 km WSW of Merizo Village, Guam on September 24, 2026 at 22:39 UTC had a depth of 129.5 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 4.2 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.2 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000tyvl). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, September 24, 2026). M4.2 Earthquake 130 km WSW of Merizo Village, Guam — September 24, 2026. Retrieved October 11, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tyvl/